Sloped Roof

Allows ventilation up to
1 200 ft2 per unit

Sloped Roof Ventilators

Trusted by roofing professionals across Canada, the VMAX 300 series is the best quality roof vent on the market. With no moving parts, its unique design allows it to utilize the full effect of the wind to create a drawing power, thus eliminating any excess heat and humidity outside the attic space. The VMAX-300 series reduces the risk of ice damming, moisture condensation and the creation mold & mildew. Built using galvanized steel this vent is completely rodent proof. The unique height design and stormproof deflector system of the VMAX-300 series also reduce any risk of weather infiltration.

  • Low maintenance: No moving parts, no electricity and completely silent.
  • Rodent Proof: Built-in galvanized wire mesh screen
  • Storm Proof: Unique precision engineered deflector system
  • Hurricane Rated: Withstanding wind and rain conditions of 180 km/h or 110 mph.
  • Adjustable Flashing: 2/12 to 15/12
  • Construction: 24 & 26 gauge galvanized steel.
  • Finish: Bake polyester powder coating, interior and exterior with UV protection.
  • Warranty: Limited Lifetime Warranty on all manufacturing defects, 5 years on paint & corrosion
Roof Vent VMAX-301 for ventilation area 1000 to 1200 ft2


Adjustable slope flashing: 2/12 to 15/12
Ventilation area: 1000 to 1200 ft2

Roof Vent VMAX-303 for ventilation area 700 to 800 ft2


Adjustable slope flashing: 2/12 to 15/12
Ventilation area: 700 to 800 ft2


Adjustable slope flashing: 2/12 to 15/12
Ventilation area: 400 to 500 ft2

Roof Vent VMAX-401 for ventilation area 800 to 1000 ft2


Replacement head for any 12 in. round ventilator.
Ventilation area: 800 to 1200 ft2

Cathedral Roof Vent VMAX


Custom made to the slope of the roof. An insulated duct is installed on the ridge of the roof assure an efficient ventilation between the joists of the roof.