Technical questions

No, The ventilators will draw from the gable vents and exchange the air near the top of the attic, but it will not draw from the eaves due to lack of air intake. You will need to install our VMAXAT-1 or VMAXAT-2 so that the ventilator may draw in fresh air at the eaves while picking up the moisture on its’ way up and out the ventilator. You will also have to close the gable ends as to not short circuit the ventilator.

No, you must always use the same model of ventilator, otherwise the stronger ventilator will draw from the weakest, therefore short circuiting the system. This is why we recommend that you block off or remove all other vents on the roof.

The ventilator model #401 will have a stronger drawing power than that of the turbines, which means it will be short circuited by the ones left on. I would recommend that you either replace them by our model #301 or by the replacement head, model #401. All ventilators that are used to ventilate the same attic space should be identical units of equal drawing power.

The Maximum ventilator will draw from these openings being closer and less restrictive, rather than from the soffits.

You will install the ventilators no closer than 3 ft. from the vertical wall. Make sure that it cannot get covered by snow accumulation near the wall.

The ventilators should be no further than 20 ft. apart from one another. Each unit should be positioned so as to ventilate an equal portion of the roof. If you have one ventilator, it should be placed in the centre, if you have two units, each unit should be positioned at ¼ distance from each end of the roof. (See installation documents for more details).

The Maximum ventilators are activated by the wind, and knowing that the wind directions changes during the year, we want this wind to pass threw the louvers from all directions that it may come. This way, the ventilator will work efficiently year long.

We recommend that you install two ventilators, one on each side of the chimney no closer than 4 ft. from the chimney. You can use the same model (it will only replace the air faster) or you can use our model #303. Make sure that the chimney is higher than our ventilator so that the smoke doesn’t flow threw the ventilators. This could cause the smoke to enter the attic space when wind velocity is nil, especially night-time.

Distance and measurements

Problems solving

The ventilator will work if the wind hits at it, but there will be draw backs that you must consider:

a) If for instant you are installing our model #301, you know that it can ventilate 1200 sq. ft., but if you position it midway up one side of the roof, it will only ventilate the bottom of that side instead of the entire attic space;

b) The ventilator will be vulnerable to snow accumulations which might lead to infiltration if it is totally or partially buried under snow.

Yes, you can have some problems since our ventilators have a very strong drawing power. The vapour barrier is very important to prevent humidity and hot air from entering the attic space easily especially if there is no air intake. You can easily fall in negative pressure and thus increase your condensation problem. Before you install a ventilator you must find a way to open the soffits or add some other form of air intake to your building (see last two sections of the product sub- section on our web site). If you cannot add a vapour barrier, you must at least add additional insulation to your attic space. The addition of ventilation on the roof must be done progressively with our least efficient model the 302.

Yes, you can install the ventilator on a metal roof two ways, off to the side with our regular flashing that comes standard with the ventilator, or you can install it directly onto the peak with a ridge flashing that we can custom build to the slope.

The Building Code states that you should ventilate the insulated ceiling area of a building, so in this case you would only need one ventilator. However, we recommend that if this is a duplex where you have two families, moisture levels will be higher, so it would be more efficient having two.

No, we recommend that you install the model #302 and space them evenly over the roof to allow for an efficient air exchange. You will need to ventilate 1/150 per code due to the small attic space, which will require you to install five.

Due to the thickness of the steel (24 gauge steel), it will not bend to the shape of a warp or uneven deck. So, we strongly recommend that all our products be installed and perfectly sealed with a good quality caulking or sealant, otherwise we cannot guarantee water or snow infiltrations coming from under the base. As for the tar melting down onto the shingles, quality is the most obvious issue. Having been roofing contractors ourselves, we have never experienced this problem. As well, this is also strongly recommended by the Master Roofing Association.

Installation issues

General questions

We recommend that you install two ventilators, one on each side of the chimney no closer than 4 ft. from the chimney. You can use the same model (it will only replace the air faster) or you can use our model #303. Make sure that the chimney is higher than our ventilator so that the smoke doesn’t flow threw the ventilators. This could cause the smoke to enter the attic space when wind velocity is nil, especially night-time.

We have never encountered this problem, and we believe the reason is because there is to much air movement within the ventilator. Have you ever noticed that insects are never flying around breezy or windy areas?

No, if the house in question is well insulated per standards, has a proper vapour barrier and the soffits are unobstructed and balanced or exceeds the opening of the exhaust vents, this shall never be an issue.

Architects

Are you looking for detailed specifications of exhaust fans and flaps for architects and construction professionals?

DIMENSIONS AND SPECIAL CHARACTERISTICS – 101

MODEL VMAX-101-12

Deflectors: 4 Base: 45 degree cant. Height : 24 1/2 in. Ventilation area: 151 to 400 ft.2
Unlike the turbine, the Maximum Ventilators are CSA approved and do not require to rotate to prevent water or snow infiltrations. Its unique storm proof system prevents infiltrations while at the same time capturing the wind flow from all directions and at wind velocities as low as 6 km./hr. (4 mi./hr.). With this combination of technology, wind and pressure differentials, a “chimney or, vacuum effect” results in drawing the stale air and moisture out, thus preventing moisture & heat build-up within the attic space.

This model has been designed to be installed onto a wooden curb. The thickness of the wooden curb in conjunction with the thickness of the roofing membrane will determine the size of the ventilator required. The interior dimension of the wood curb should equal to the opening in the deck to allow for unobstructed air flow. The suggested roof area for one (1) ventilator model VMAX-101-12 has been calculated based on a 10 in. x 10 in. opening or (hole) of curb and roof deck.
Model : VMAX-101-12
Deflectors : 4
Net Free Evacuation : 144 in2.
Tested Extraction Rate : 418 CFM
Suggested Ventilation Area : 151 to 400 ft2. (Refer to chart)
Base Flashing : 45 degree cant flashing
Storm Proof : Unique precision engineered deflector system
Solid : Built of structural galvanized steel
Standard Gauge : 24 & 26
Rodent Proof : Built-in galvanized wire mesh screen
Finish : Interior and exterior powder coated polyester baked paint with UV protection
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Available Colours : Black, brown, grey, and white
Compliances : CSA, CAN-3-A930M82, ASTM-527
A limited selection of special colours is available at a slight premium.

DIMENSIONS AND SPECIAL CHARACTERISTICS – STANDARD LOUVERED PENTHOUSE

MODEL VMAX LOUVERED PENTHOUSE WITH CLOSED CORNERS

The Louvered Penthouse with closed corners is available with or without storm-proof deflectors (as used for mechanical evacuation). The Penthouse Ventilators are built in sizes varying from 4 ft. x 4 ft. up to and including 6 ft. x 6 ft. Such characteristics as the quantity of louvers, the type of metal, the total evacuation, the steel gauge (maximum thickness 1/8 in.) and all the dimension of the penthouse can be modified to suit your needs. Special flashing can be built to suit all types of roofs. Different types of louvers to prevent infiltrations are also available on request. Do not hesitate to send us your specifications or needs. When specifying the size of the ventilator, always remember to calculate an allowance for the thickness of wooden curb and roof membrane.

The louvered penthouse are available by special orders only. Fabrication starts once we receive the order which can then take anywhere between four (4) to six (6) weeks delivery depending on your location and season.

We recommend so as to not delay your projects that you place these orders in conjunction with these delays before starting a job.
A limited selection of special colours is available at a slight premium.

MODEL VMAX STANDARD LOUVERED PENTHOUSE

Model : VMAX Standard louvered penthouse
Unlike the turbine, the Maximum Ventilators are CSA approved and do not require to rotate to prevent water or snow infiltrations. Its unique storm proof system prevents infiltrations while at the same time capturing the wind flow from all directions and at wind velocities as low as 6 km./hr. (4 mi./hr.). With this combination of technology, wind and pressure differentials, a “chimney or, vacuum effect” results in drawing the stale air and moisture out, thus preventing moisture & heat build-up within the attic space.

The Maximum Louvered Penthouse has been designed to evacuate great volumes of air while still protecting the building from weather infiltrations, even in high gust of winds. Completely rodent proof due to a built-in galvanized wire mesh screen and steel construction. It can be designed to be installed onto both slope and flat roofs. Mostly used on commercial, industrial, and agricultural buildings.
Dimensions Availables : 26 in. x 26 in. up to 46 in. x 46 in.
Base Flashing : Can be fabricated for slope, or flat roof application
Storm Proof : Unique precision engineered deflector system
Solid : Built of structural galvanized steel
Standard Gauge : 20 & 22
Rodent Proof : Built-in galvanized wire mesh screen
Finish : Interior and exterior powder coated polyester baked paint with UV protection
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Available Colours : Black, brown, grey, and white
Compliances : CSA, CAN-3-A930M82, ASTM-527
A limited selection of special colours is available at a slight premium.

The Maximum wall exhaust traps

The Maximum wall exhaust traps

Washroom, Dryer, HVAC and Hood Range.
Design : Engineered to protect the damper from direct contact of extreme weather.
Energy Savings : Unique air tight triple seal gasket.
Net Air Flow : Unique and specifically designed and engineered to permit for the exact net free air flow for both intake and exhaust, thus, eliminating back flow pressure.
Silent : Fine tune precision. The damper mechanism combined with the insulated damper, reduces noise level to a whisper.
Backdraft Proof : Unique anti gust deflector incorporated within the structural envelope.
Tail Pipe : A built-in 9 in. tail pipe (no need of extensions) eliminates moisture loss within the wall cavity and reduces lint build up at the joints.
Rodent Proof : Removable galvanized screen grill, combined with the metal structure, discourages nesting and all other destructible abuses.
Interchangeable : Two products in one, these wall vents can be transformed from an exhaust to an air intake vent within minutes.
Maintenance : Removable grill & damper allows cleaning of ducts all from outdoors.
Finish : Highest quality powder coated paint finish with UV protection.
Available Colour : White (other colours available at a slight premium).
Dimensions : 3 , 4, 5, 6, & 3 ¼ x 10 in.
WARNING : Clogged Dryer Ducts are one of the leading causes of residential fires. Periodic checks and or professional cleaning are highly recommended.

DIMENSIONS AND SPECIAL CHARACTERISTICS – 201-MB

MODEL VMAX-201-12-MB

Deflectors: 4 Base: insulated interior Height : 24 1/2 in. Ventilation area: 151 to 450 ft.2
Unlike the turbine, the Maximum Ventilators are CSA approved and do not require to rotate to prevent water or snow infiltrations. Its unique storm proof system prevents infiltrations while at the same time capturing the wind flow from all directions and at wind velocities as low as 6 km./hr. (4 mi./hr.). With this combination of technology, wind and pressure differentials, a “chimney or, vacuum effect” results in drawing the stale air and moisture out, thus preventing moisture & heat build-up within the attic space.

All in one, no need of a wood curb, this model has been designed to allow you to install the roofing membrane onto the base flashing the same way you would a wood curb. We have made an allowance for the membrane so that the neck of the ventilator will go over both the flashing and the membrane.
Model : VMAX-201-12-MB
Deflectors : 4
Net Free Evacuation : 121 in2.
Tested Extraction Rate : 351 CFM
Suggested Ventilation Area : 151 to 450 ft2. (Refer to chart above)
Base Flashing : Flat base with insulated interior
Storm Proof : Unique precision engineered deflector system
Solid : Built of structural galvanized steel
Standard Gauge : 24 & 26
Rodent Proof : Built-in galvanized wire mesh screen
Finish : Interior and exterior powder coated polyester baked paint with UV protection
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Available Colours : Black, brown, grey, and white
Compliances : CSA, CAN-3-A930M82, ASTM-527
A limited selection of special colours is available at a slight premium.

DIMENSIONS AND SPECIAL CHARACTERISTICS – 102-MB

MODEL VMAX-102-12-MB

Deflectors: 1 Base: insulated interior Height : 24 1/4 in. Ventilation area: 100 to 150 ft.2
Unlike the turbine, the Maximum Ventilators are CSA approved and do not require to rotate to prevent water or snow infiltrations. Its unique storm proof system prevents infiltrations while at the same time capturing the wind flow from all directions and at wind velocities as low as 6 km./hr. (4 mi./hr.). With this combination of technology, wind and pressure differentials, a “chimney or, vacuum effect” results in drawing the stale air and moisture out, thus preventing moisture & heat build-up within the attic space.

All in one, no need of a wood curb, this model has been designed to allow you to install the roofing membrane onto the base flashing the same way you would a wood curb. We have made an allowance for the membrane so that the neck of the ventilator will go over both the flashing and the membrane.
Model : VMAX-102-12-MB
Deflectors : 1
Net Free Evacuation : 96 in2.
Tested Extraction Rate : 134 CFM
Suggested Ventilation Area : 100 to 150 ft2.
Base Flashing : Flat base, insulated interior flashing
Storm Proof : Unique precision engineered deflector system
Solid : Built of structural galvanized steel
Standard Gauge : 24 & 26
Rodent Proof : Built-in galvanized wire mesh screen
Finish : Interior and exterior powder coated polyester baked paint with UV protection
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Available Colours : Black, brown, grey and white
Compliances : CSA, CAN-3-A930M82, ASTM-527
A limited selection of special colours is available at a slight premium.

DIMENSIONS AND SPECIAL CHARACTERISTICS – 101

DIMENSIONS AND SPECIAL CHARACTERISTICS – 102

DIMENSIONS AND SPECIAL CHARACTERISTICS – CT

MODEL VMAX-102-12 

Deflectors: 1 Base: 45 degree cant. Height : 23 1/4 in. Ventilation area: 100 to 150 ft2
Unlike the turbine, the Maximum Ventilators are CSA approved and do not require to rotate to prevent water or snow infiltrations. Its unique storm proof system prevents infiltrations while at the same time capturing the wind flow from all directions and at wind velocities as low as 6 km./hr. (4 mi./hr.). With this combination of technology, wind and pressure differentials, a “chimney or, vacuum effect” results in drawing the stale air and moisture out, thus preventing moisture & heat build-up within the attic space.

This model has been designed to be installed onto a wooden curb. The thickness of the wooden curb in conjunction with the thickness of the roofing membrane will determine the size of the ventilator required. The interior dimension of the wood curb should equal to the opening in the deck to allow for unobstructed air flow. The suggested roof area for one (1) ventilator model VMAX-102-12 has been calculated based on a 10 in. x 10 in. opening or (hole) of curb and roof deck.
Model : VMAX-102-12
Deflectors : 1
Net Free Evacuation : 96 in.2
Suggested Ventilation Area : 100 to 150 ft.2
Tested Extraction Rate : 134 CFM
Base Flashing : 45 degree cant flashing
Storm Proof : Unique precision engineered deflector system
Solid : Built of structural galvanized steel
Standard Gauge : 24 & 26
Rodent Proof : Built-in galvanized wire mesh screen
Finish : Interior and exterior powder coated polyester baked paint with UV protection
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Available Colours : Black, brown, grey, and white
Compliances : CSA, CAN-3-A930M82, ASTM-527
A limited selection of special colours is available at a slight premium.

ACCESSORIES - EXTENSIONS

  • Special orders only. Manufacturing delays may vary depending on season.
  • Available Colours : Black, brown and grey.
  • Support Brackets are available for extensions three (3) feet and higher at a small premium.

A limited selection of special colours is available at a slight premium.

ACCESSORIES RIDGE FLASHING

This special flashing is installed directly on the ridge of the roof allowing for a perfect balance of ventilation and extra height for the heavy snow regions or forest areas. It allows for a fast and easy installation onto any roofing materials whether it be asphalt shingles or metal roofs. It can be manufactured to fit all dimensions, and can be made of any raw metal of your choice.

  • When ordering this flashing, the slope is required.
  • Manufacturing delays may vary depending on season.
  • Available Colours: Black, brown, or grey.

A limited selection of special colours is available at a slight premium.

DIMENSIONS AND SPECIAL CHARACTERISTICS – CATHEDRAL SYSTEM

MODEL VMAX-CATHEDRAL

Special order: Custom made to the slope of the roof. An insulated duct installed on the ridge of the roof to assure an efficent ventilation between the joists of the roof.
Ventilation Maximum designed and engineered a ventilation system in combination with the VMAX-301-12 ventilator that will allow, due to the ventilators exceptional drawing power, to draw fresh air from the soffits up between each rafter (between the insulation and underside of the roof deck) into an assembled weather tight duct system. It will then be extracted out the ventilator, thus, allowing for continuous fresh air flow throughout the attic space and preventing heat and moisture buildup from deteriorating the structural integrity of the building & its components.

Another valuable feature to this system is that it has been designed and developed to withstand the harshest weather conditions that Mother Nature could offer including hail & snow accumulations, thus, finally, giving the home owner peace of mind.
Model : Cathedral system
Storm Proof : Unique precision engineered deflector system
Solid : Built of galvanized steel
Standard Gauge : 24 & 26
Rodent Proof : Built-in galvanized wire mesh screen
Finish : Interior and exterior powder coated polyester baked paint with UV protection
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Available Colours : Black, brown, grey
Compliances : CSA, CAN-3-A930M82, ASTM-527
A limited selection of special colours is available at a slight premium.

MODEL VMAX-401-12

Replacement head for any 12 in. round ventilator. Adapter: Sold seperately for 10 & 14 in. units. Suggested ventilation area: 800 to 1000ft2.
Unlike the turbine, the Maximum Ventilators are CSA approved and do not require to rotate to prevent water or snow infiltrations. Its unique storm proof system prevents infiltrations while at the same time capturing the wind flow from all directions and at wind velocities as low as 6 km./hr. (4 mi./hr.). With this combination of technology, wind and pressure differentials, a “chimney or, vacuum effect” results in drawing the stale air and moisture out, thus preventing moisture & heat build-up within the attic space.

This ventilator has been designed to replace faulty turbines of 12 in. diameters but can also replace a 10 in. or 14 in. turbines by installing an adaptor that can be ordered separately. No need of removing or replacing the shingles, allows for fast and easy installation.
Model : VMAX-401-12
Standard Gauge : 24 & 26
Deflectors : 4
Rodent Proof : Built-in galvanized wire mesh screen
Net Free Evacuation : 113 in.2
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Suggested Ventilation Area : 800 to 1000 ft.2
Solid : Built of galvanized steel
Finish : Interior and exterior powder coated polyester baked paint with UV protection
Available Colours : Black, brown, grey
Compliances : CSA, CAN-3-A930M82, ASTM-527
A limited selection of special colours is available at a slight premium.

DIMENSIONS AND SPECIAL CHARACTERISTICS – 301

MODEL VMAX-301-12

Adjustable sloped flashing from 2/12 to 15/12 Suggested ventilation area: 1000 to 1200ft2.
Unlike the turbine, the Maximum Ventilators are CSA approved and do not require to rotate to prevent water or snow infiltrations, even withstanding hurricane wind and rain conditions of 175 km./hr. or 110 mi/hr. Its unique storm proof system prevents infiltrations, while at the same time capturing the wind from all directions and at velocities as low as 6 km./hr. (4 mi./hr.). With this combination of technology, wind and pressure differentials, a “chimney effect” results in drawing the stale air and moisture out of the attic space, while replacing it with fresh new air that enters through the soffits.

The model VMAX-301-12 has been designed for slope roof application and is compatible with most all types of roofing membrane including metal. It has no moving parts, requires no electricity, and is completely silent and maintenance free. Built tough to endure the harshest weather conditions that nature has to offer including hail storms. It sits high enough off the roof deck to allow it to weather through snow accumulations without being covered, thus, finally giving the home owner a peace of mind.
Model : VMAX-301-12
Standard Gauge : 24 & 26
Deflectors : 4
Rodent Proof : Built-in galvanized wire mesh screen
Net Free Evacuation : 144 in.2
Finish : Interior and exterior powder coated polyester baked paint with UV protection
Suggested Ventilation Area : 1000 to 1200 ft.2
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Adjustable Flashing : 2/12 to 15/12
Available Colours : Black, brown, grey
Storm Proof : Unique precision engineered deflector system
Compliances : CSA, CAN-3-A930M82, ASTM-527, Miami Dade approved, ICC-ES
Solid : Built of galvanized steel
A limited selection of special colours is available at a slight premium.

MODEL VMAX-303-12

Adjustable sloped flashing from 2/12 to 15/12 Suggested ventilation area: 700 to 800ft2.
Unlike the turbine, the Maximum Ventilators are CSA approved and do not require to rotate to prevent water or snow infiltrations. Its unique storm proof system prevents infiltrations while at the same time capturing the wind from all directions and at velocities as low as 6 km./hr. (4 mi./hr.). With this combination of technology, wind and pressure differentials, a “chimney effect” results in drawing the stale air and moisture out of the attic space, while replacing it with fresh new air that enters through the soffits.

The model VMAX-303-12 has been designed for slope roof application and is compatible with most all types of roofing membrane including metal. It has no moving parts, requires no electricity, and is completely silent and maintenance free. Built tough to endure the harshest weather conditions that nature has to offer including hail storms. It sits high enough off the roof deck to allow it to weather through snow accumulations without being covered, thus, finally giving the home owner a peace of mind.
Model : VMAX-303-12
Standard Gauge : 24 & 26
Deflectors : 3
Rodent Proof : Built-in galvanized wire mesh screen
Net Free Evacuation : 105 in.2
Finish : Interior and exterior powder coated polyester baked paint with UV protection
Suggested Ventilation Area : 700 to 800 ft.2
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Adjustable Flashing : 2/12 to 15/12
Available Colours : Black, brown, grey
Storm Proof : Unique precision engineered deflector system
Conformités : CSA, CAN-3-A930M82, ASTM-5277 Un choix limité de couleurs spéciales est disponible moyennant un léger supplément.
Solid : Built of galvanized steel
A limited selection of special colours is available at a slight premium.

MODEL VMAX-302-12

Adjustable sloped flashing from 2/12 to 15/12 Suggested ventilation area: 400 to 500 ft2.
Unlike the turbine, the Maximum Ventilators are CSA approved and do not require to rotate to prevent water or snow infiltrations. Its unique storm proof system prevents infiltrations while at the same time capturing the wind from all directions and at velocities as low as 6 km./hr. (4 mi./hr.). With this combination of technology, wind and pressure differentials, a “chimney effect” results in drawing the stale air and moisture out of the attic space, while replacing it with fresh new air that enters through the soffits.

The model VMAX-302-12 has been designed for slope roof application and is compatible with most all types of roofing membrane including metal. It has no moving parts, requires no electricity, and is completely silent and maintenance free. Built tough to endure the harshest weather conditions that nature has to offer including hail storms. It sits high enough off the roof deck to allow it to weather through snow accumulations without being covered, thus, finally giving the home owner a peace of mind.
Model : VMAX-302-12
Standard Gauge : 24 & 26
Deflector : 1
Rodent Proof : Built-in galvanized wire mesh screen
Net Free Evacuation : 96 in.2
Finish : Interior and exterior powder coated polyester baked paint with UV protection
Suggested Ventilation Area : 400 to 500 ft.2
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Adjustable Flashing : 2/12 to 15/12
Available Colours : Black, brown, grey
Storm Proof : Unique precision engineered deflector system
Compliances : CSA, CAN-3-A930M82, ASTM-527
Solid : Built of galvanized steel
A limited selection of special colours is available at a slight premium.

DIMENSIONS AND SPECIAL CHARACTERISTICS – 302

MODEL VMAX-CT-4

Dimension : Built-in 4 in. diameter tail pipe
Roof Pitch : 2/12 to 15/12
Height : 73/4 in.
Width : 51/4 in.
Storm Proof : Unique precision engineered storm proof system
Solid : Structural quality galvanized steel
Rodent Proof : Removable galvanized wire mesh grill
Finish : Powder coated polyester baked paint with UV protection
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Available Colours : Black, brown and grey
A limited selection of special colours is available at a slight premium.
Solin : 2/12 à 7/12
Couleurs standards : Noir, brun et gris
À l’épreuve d’infiltration : Système de déflecteurs de conception et précision unique
Conformités : CSA, CAN-3-A930M82, ASTM-5277 Un choix limité de couleurs spéciales est disponible moyennant un léger supplément.
Solide : Construit en acier galvanisé de qualité structurale

MODEL VMAX-CT-6

Dimension : Built-in 6 in. diameter tail pipe
Height : 7 3/4 in.
Width :7 1/4 in.
Roof Pitch : 2/12 to 15/12
Storm Proof : Unique precision engineered storm proof system
Solid : Structural quality galvanized steel
Rodent Proof : Removable galvanized wire mesh grill
Finish : Powder coated polyester baked paint with UV protection
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Available Colours : Black, brown and grey
A limited selection of special colours is available at a slight premium.

DIMENSIONS AND SPECIAL CHARACTERISTICS – 102

DIMENSIONS AND SPECIAL CHARACTERISTICS – AT1 1836-L/S

DIMENSIONS AND SPECIAL CHARACTERISTICS – 50% SOFFIT

MODEL VMAX 50% SOFFIT

The VMAX 50% Soffit is a unique soffit vent developed to permit considerable quantity of fresh air intake for the improvement of the attic ventilation. Developed for those buildings when the existing soffits are not performing as expected due to their net free air specification, restrictive width or length of the soffit overhang, or again when you need to balance air flow on buildings with different length of roof slopes.

They are frequently used as an efficient, yet, economical way of replacing existing soffits that were installed over wood, at strategic areas, thus allowing savings for the end user.

A product with multiple uses that offers the end user an effective and economical solution for a final peace of mind.
Model : VMAX 50% Soffit
Width : 8 in. or 4 in.
Length : 48 in.
Perforation : 0.1875 in.
Net Free Air : 164 in.2
Material : Aluminium
Finish : Powder coated polyester baked paint with UV protection
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Available Colours : White
A limited selection of special colours is available at a slight premium.

DIMENSIONS AND SPECIAL CHARACTERISTICS – VMAX-AT2-1836-L/S

MODEL VMAX-AT2-1836-L/S SLOPE ROOF AIR INTAKE

The VMAX-AT2-1836-L & AT2-1836-S are unique triangluar air intake vents designed and engineered for buildings with limited or non-existent soffits and for situations where the structural components including firewalls are obstructing the fresh air intake for attic air circulation.

These models are installed directly on top of the roof over the eaves (overhang), even (flush) with the facias. The fresh air enters directly into the attic space from the roof to allow for attic air circulation in combination with the Maximum roof ventilators. The unique storm proof system will prevent weather infiltrations while still allowing fresh air intake, thus, preventing heat build-up and moisture condensation which can lead to the premature wear of the building and its components. Most effective and efficient product that will save the homeowner time, money, and give final peace of mind.

Note: these models are available in two different dimensions and slope variables, please view all specifications in the complete catalogue.
Model : VMAX-AT2-1836-L & AT2-1836-S
Profile : Triangular
Net Free Air : 162 in.2
Roof Pitch VMAX-AT2-1836-L : 3/12 to 8/12
Roof Pitch VMAX-AT2-1836-S : 9/12 to 15/12
Storm Proof : Unique precision engineered storm proof system
Solid : Structural quality galvanized steel
Standard Gauge : 24 & 26
Rodent Proof : Built-in galvanized wire mesh screen
Finish : Powder coated polyester baked paint with UV protection
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Available Colours : Black, brown and grey
Compliances : CSA, CAN-3-A930M82, ASTM-527
A limited selection of special colours is available at a slight premium.

DIMENSIONS AND SPECIAL CHARACTERISTICS – VMAX-AT2-1224-L/S

MODEL VMAX-AT2-1224-L/S SLOPE ROOF AIR INTAKE

The VMAX-AT2-1224-L & AT2-1224-S are unique triangluar air intake vents designed and engineered for buildings with limited or non-existent soffits and for situations where the structural components including firewalls are obstructing the fresh air intake for attic air circulation.

These models are installed directly on top of the roof over the eaves (overhang), even (flush) with the facias. The fresh air enters directly into the attic space from the roof to allow for attic air circulation in combination with the Maximum roof ventilators. The unique storm proof system will prevent weather infiltrations while still allowing fresh air intake, thus, preventing heat build-up and moisture condensation which can lead to the premature wear of the building and its components. Most effective and efficient product that will save the homeowner time, money, and give final peace of mind.

Note: these models are available in two different dimensions and slope variables, please view all specifications in the complete catalogue.
Model : VMAX-AT2-1224-L & AT2-1224-S
Profile : Triangular
Net Free Air : 72 in.2
Roof Pitch VMAX-AT2-1836-L : 3/12 to 8/12
Roof Pitch VMAX-AT2-1836-S : 9/12 to 15/12
Storm Proof : Unique precision engineered storm proof system
Solid : Structural quality galvanized steel
Standard Gauge : 24 & 26
Rodent Proof : Built-in galvanized wire mesh screen
Finish : Powder coated polyester baked paint with UV protection
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Available Colours : Black, brown and grey
Compliances : CSA, CAN-3-A930M82, ASTM-527
A limited selection of special colours is available at a slight premium.

Model-VMAX-AE-Vent-Dimensions-EN

MODEL VMAX AE VENT

The VMAX-Storm Proof Wall Vent is a unique air intake vent designed and engineered specifically for buildings with limited, nonfunctional, or non- existent soffits for the fresh air intake required by code for attic air ventilation. This unique design allows the end user an alternative for fresh air intake through the walls without compromising the integrity of the building within.

Completely storm proof, it is built of galvanized structural steel and a unique built-in storm proof protection diverter pan preventing all weather infiltrations, even in high gust of winds. This latest new addition to Maximums collection of innovative products offers definitive flexibility and solutions for engineers, architects, designers, and building owners.
Model : VMAX-AE-Vent
Profiles : Square, rectangular, triangular
Sizes : Costumed made to your requirements and specifications
Storm Proof : Unique precision engineered protection diverter pan
Solid : Highest quality galvanized structural steel
Standard Gauge : 24
Rodent Proof : Built-in galvanized wire mesh screen
Finish : Powder coated polyester baked paint with UV protection
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Available Colours : Black, brown, grey and white
A limited selection of special colours is available at a slight premium.

DIMENSIONS AND SPECIAL CHARACTERISTICS – STORM PROOF SOFFIT

MODEL VMAX STORM PROOF SOFFIT

The VMAX Storm Proof Soffit is a unique soffit that has been designed and engineered for fresh air intake for attic air circulation and to prevent all weather infiltrations into the attic space, even in high gust of wind.

A bonus feature to this product is its steel construction that prevents all rodents, including raccoons, from gaining access into the attic space.
Model : VMAX Storm Proof Soffit
Net Free Air : 96.48 in.2
Width : Costumed from 4 in. to 28 in. (on demand)
Length : 8 ft. including 2 in. overlap
Thickness :Variable from 1 in. to 2 in.
Net Free Air for 1/2 in. opening : 39 in.2 per length
Net Free Air for 3/4 in. opening : 58 in.2 per length
Net Free Air for 1 in. opening : 78 in.2 per length
Standard Gauge : 24
Rodent Proof : Built-in 1/4 in. (6.35 mm) galvanized wire mesh screen
Finish : Pre-painted steel
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Available Colours : All available pre-painted galvanized steel
Net opening of 1-inch storm proff soffit : 78po2 / 0.5m2

MODEL VMAX-AT1-1836-L/S SLOPE ROOF AIR INTAKE

The VMAX-AT1-1836-L & AT1-1836-S are unique rectangular air intake vents designed and engineered for buildings with limited or non- existent soffits, and situations where the structural components, including firewalls, are obstructing the fresh air intake for attic air circulation.

These models are installed directly on top of the roof over the eaves (overhang), even (flush) with the facias. The fresh air intake enters directly into the attic space from the roof to allow for attic air circulation in combination with the Maximum roof ventilators. The unique storm proof system will prevent weather infiltrations while still allowing fresh air intake, thus, preventing heat build- up and moisture condensation which can lead to the premature wear of the building and its components. Most effective and efficient product that will save the homeowner time, money and give final peace of mind

Note: these models are available in two different dimensions and slope variables, please view specifications and chart on the following page.
Model : VMAX-AT1-1836-L & AT1-1836-S
Profile : Rectangular
Net Free Air : 324 in.2
Roof Pitch VMAX-AT1-1836-L : 3/12 to 8/12
Roof Pitch VMAX-AT1-1836-S : 9/12 to 15/12
Storm Proof : Unique precision engineered storm proof system
Solid : Structural quality galvanized steel
Standard Gauge : 24 & 26
Rodent Proof : Built-in galvanized wire mesh screen
Finish : Powder coated polyester baked paint with UV protection
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Available Colours : Black, brown and grey
Compliances : CSA, CAN-3-A930M82, ASTM-527
A limited selection of special colours is available at a slight premium.
Deflector addons possible

MODEL VMAX-CT-10

Dimension : Built-in 3 1/4 x 10 in. rectangular tail pipe
Height : 7 3/4 in.
Width :11 1/4 in.
Roof Pitch : 2/12 to 15/12
Storm Proof : Unique precision engineered storm proof system
Rodent Proof : Removable galvanized wire mesh grill
Finish : Powder coated polyester baked paint with UV protection
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Available Colours : Black, brown and grey
A limited selection of special colours is available at a slight premium.

DIMENSIONS AND SPECIAL CHARACTERISTICS – AT1 1224-L/S

MODEL VMAX-AT1-1224-L/S SLOPE ROOF AIR INTAKE

The VMAX-AT2-1224-L & AT1-1224-S are unique rectangular air intake vents designed and engineered for buildings with limited or non-existent soffits and for situations where the structural components including firewalls are obstructing the fresh air intake for attic air circulation.

These models are installed directly on top of the roof over the eaves (overhang), even (flush) with the facias. The fresh air enters directly into the attic space from the roof to allow for attic air circulation in combination with the Maximum roof ventilators. The unique storm proof system will prevent weather infiltrations while still allowing fresh air intake, thus, preventing heat build-up and moisture condensation which can lead to the premature wear of the building and its components. Most effective and efficient product that will save the homeowner time, money, and give final peace of mind.

Note: these models are available in two different dimensions and slope variables, please view all specifications in the complete catalogue.
Model : VMAX-AT1-1224-L & AT1-1224-S
Profile : Rectangular
Net Free Air : 144 in.2
Roof Pitch VMAX-AT1-1224-L : 4/12 to 8/12
Roof Pitch VMAX-AT1-1224-S :9/12 to 15/12
Storm Proof : Unique precision engineered storm proof system
Solid : Structural quality galvanized steel
Standard Gauge : 24 & 26
Rodent Proof : Built-in galvanized wire mesh screen
Finish : Powder coated polyester baked paint with UV protection
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Available Colours : Black, brown and grey
Compliances : CSA, CAN-3-A930M82, ASTM-527
A limited selection of special colours is available at a slight premium.
Deflector addons possible

DIMENSIONS AND SPECIAL CHARACTERISTICS – MANSARD SOFFIT

MODEL VMAX MANSARD SOFFIT

The VMAX Mansard Soffit Drip Edge has been developed and deigned to allow for fresh air intake directly into the attic space at the junction or transition of the mansard and eave of the slope roof where you would normally install a drip edge.
Two products in one, this product is an effective and efficient way to ensure proper ventilation and prevent heat build-up and moisture condensation which can lead to the premature wear of the building and its components. An innovative product that will save homeowners time, money and final peace of mind.
Model : VMAX Mansard Soffit Drip Edge
Net Free Air : 96.48 in.2
Length : 8 ft. including 2 in. overlap
Roof Pitch : Costumed to your specifications
Solid : Structural quality galvanized steel
Standard Gauge : 24
Rodent Proof : Built-in 1/8 in. (3.175 mm) galvanized wire mesh screen
Finish : Powder coated polyester baked paint with UV protection
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Available Colours : Black, brown and grey
Compliances : CSA, CAN-3-A930M82, ASTM-527
A limited selection of special colours is available at a slight premium.

DIMENSIONS AND SPECIAL CHARACTERISTICS – AT1-1213-DF

MODEL VMAX-AT1-1213-DF SLOPE ROOF AIR INTAKE VENTS

The VMAX-AT1-1213-DF is a unique air intake vent designed and engineered specifically for buildings required to follow fire code regulations preventing the use of fresh air intake at the underside of the eaves, or built-in firewalls within the attic, due to risk of fire propagation, especially on row homes, being so close to one another. It is also used in situations where soffits are non- existent or non-functional. The concept of this intake vent allows the end user to install them at strategic areas throughout the roof, introducing fresh air directly into the attic space from the roof for attic air circulation in combination with the Maximum roof ventilators.

The unique storm proof system prevents weather infiltrations while still allowing fresh air intake, thus, preventing heat build-up and moisture condensation which will lead to premature wear of the building and its components. A most effective and efficient product that will save the homeowner time, money and give final peace of mind.
Model : VMAX-AT1-1213-DF
Profile : Rectangular
Net Free Air : 90 in.2
Roof Pitch : 4/12 to 15/12
Storm Proof : Unique precision engineered storm proof system
Solid : Structural quality galvanized steel
Standard Gauge : 24 & 26
Rodent Proof : Built-in galvanized wire mesh screen
Finish : Powder coated polyester baked paint with UV protection
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Available Colours : Black, brown and grey
Compliances : CSA, CAN-3-A930M82, ASTM-527
A limited selection of special colours is available at a slight premium.

DIMENSIONS AND SPECIAL CHARACTERISTICS – 895-DF

MODEL VMAX-AT1-895-DF SLOPE ROOF AIR INTAKE VENTS

Model : VMAX-AT1-895-DF
Profile : Rectangular
Net Free Air : 40 in.2
Roof Pitch : 4/12 to 15/12
Storm Proof : Unique precision engineered storm proof system
Solid : Structural quality galvanized steel
Standard Gauge : 24 & 26
Rodent Proof : Built-in galvanized wire mesh screen
Finish : Powder coated polyester baked paint with UV protection
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Compliances : CSA, CAN-3-A930M82, ASTM-527
A limited selection of special colours is available at a slight premium.

MODEL MULTIPLE ROOF EXHAUST TRAP

Dimension : Built-in 4 in. diameter tail pipe
The model VMAX Multiple Roof Exhaust trap has been designed to allow for the discharge of two or more mechanical exhaust units. It is costumed made to your specification for the number of exhaust required as well as the size. All the exhaust unit are then grouped together and connected onto their dedicated exhaust trap specified on the unit. This allows the end user to reduce the number of holes penetration in the roof deck and labour.

The exhaust traps that are built onto the unit are designed and engineered to permit for the exact net air flow of the exhaust from entry to the exit without any restrictions, thus eliminating all backflow pressure. The damper mechanism within, combined with the insulated damper, reduces noise level to a whisper. Should it be necessary to work within the unit itself, simply by removing the screws will allow the removal of the cover to allow for complete access within.
Dimension : Built-in 3,4,5,6 diameter tail pipe and 3-1/4 x 10 in. rectangular tail pipe
Slope Roof Flashing : Costumed made to specified slope
Flat Roof Flashing : Costumed made to your specification
Height : 24 in.
Width : Number and size of exhaust units determines it
Solid : Structural quality galvanized steel
Storm Proof : Unique precision engineered storm proof system
Rodent Proof : Removable galvanized wire mesh grill
Finish : Powder coated polyester baked paint with UV protection
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Available Colours : White Maximum, black, brown and grey
A limited selection of special colours is available at a slight premium.

DIMENSIONS AND SPECIAL CHARACTERISTICS – AD-12

MODEL CT-AD-12 SLOPE ROOF EXHAUST

The model VMAX-CT-AD-12 Roof Exhaust trap has been designed to allow for the discharge of one mechanical exhaust unit. It is costumed made to your specification for the size of exhaust required up to 6 in. diameter. The duct of the mechanical exhaust unit is connected onto the exhaust trap allowing for the discharge to be released out of the roof. The dimensions and opening of this unit allows the end user more room to work freely from the roof, especially on low slope and flat roof applications, and the height will allow for numerous snow falls before being covered or causing ice dams. ¯­

The exhaust traps that are built onto the unit are designed and engineered to permit for the exact net air flow of the exhaust from entry to the exit without any restrictions, thus eliminating all back flow pressure. The damper mechanism within, combined with the insulated damper, reduces noise level to a whisper.
Dimension : Built-in 3,4,5 or 6 in. diameter tail pipe
Slope Roof Flashing : Adjustable 2/12 to 15/12
Flat Roof Flashing : 11 1/4 in.
Solid : Structural quality galvanized steel
Storm Proof : Unique precision engineered storm proof system
Rodent Proof : Removable galvanized wire mesh grill
Finish : Powder coated polyester baked paint with UV protection
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Available Colours : White Maximum, black, brown and grey
A limited selection of special colours is available at a slight premium.

MODEL VMAX-302-8

Adjustable sloped flashing from 2/12 to 7/12 Suggested ventilation area: 50 to 250 ft2.
Unlike the turbine, the Maximum Ventilators are CSA approved and do not require to rotate to prevent water or snow infiltrations. Its unique storm proof system prevents infiltrations while at the same time capturing the wind flow from all directions and at wind velocities as low as 6 km./hr. (4 mi./hr.). With this combination of technology, wind and pressure differentials, a “chimney or, vacuum effect” results in drawing the stale air and moisture out, thus preventing moisture & heat build-up within the attic space.

The model VMAX-302-8 has been designed for slope roof application varying from a 2/12 to 7/12 pitch. This ventilator was designed for the application on smaller roofs such as sunrooms, extensions, etc., where the aesthetics as well as efficiency is important. Has no moving parts, requires no electricity, it is completely silent and maintenance free. Built tough to endure the harshest weather conditions that nature has to offer including hail storms. It sits high enough off the roof deck to allow it to weather through snow accumulations without being covered, thus, finally giving the home owner a peace of mind.
Model : VMAX-302-8
Standard Gauge : 24 & 26
Deflector : 1
Rodent Proof : Built-in galvanized wire mesh screen
Net Free Evacuation : 64 in.2
Finish : Interior and exterior powder coated polyester baked paint with UV protection
Suggested Ventilation Area : 50 to 250 ft.2
Warranty : Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Adjustable Flashing : 2/12 to 7/12
Available Colours : Black, brown, grey
Storm Proof : Unique precision engineered deflector system
Compliances : CSA, CAN-3-A930M82, ASTM-527
Solid : Built of galvanized steel
A limited selection of special colours is available at a slight premium.