Roof Ventilator Sizes

The key to proper ventilation of your roof and attic is balance.

Roof ventilator sizes.

The idea of roof vents existed for hundreds of years with natural vents employed in chinese buildings during the tang dynasty natural ventilation ducts in the buddhist monks caves and wind catchers incorporated in arabian architecture. You can calculate attic ventilation requirements by determining the square footage of your attic floor its width times its length and compare that to the total required net free area nfa. Vent roofs with steeples towers or cupolas can be found in different buildings from barns to cathedrals. Aluminum wall louver static vent in white model da1212w.

Sizes 100 245 are constructed with a hinged aluminum hood. How do you pick the right attic vent. A roof turbine ventilator requires only the wind to work. Master flow 12 in.

The amount of space you devote to intake must be equal to the amount you allow for exhaust and these must be calculated according to the size of your attic and slope of your roof. Cook s aluminum centrifugal power roof and wall ventilators provide maximum performance and durability in a wide variety of commercial and industrial air moving applications. Active ventilation 14 in. Set your store to see local availability add to cart.

Power roof ventilator belt drive. The building codes and building science for. Centrifugal roof and wall exhauster ventilators. These vents aren t one size fits all though.

The atd roof exhauster is designed for roof mounted exhaust of relatively clean air for applications that require the exhausted air to be moved up and away from the building and where re entry into the building supply air is possible. Centrifugal roof ventilator upblast direct drive application. Black powder coated aluminum roof vent no moving parts wind turbine model av 14 c2 bl 60 37 60 37. They come in a variety of styles and sizes to suit different situations.

Roof vents choose one of the following products to meet the recommended exhaust nfva of 528 square inches. Fan shall be a hooded low profile roof mounted belt driven downblast centrifugal exhaust ventilator. The first step is to check out this 60 second video and learn about the 300 1 rule the difference between intake and exhaust ventilation and why proper ventilation is so important to get right to help calculate your attic ventilation needs visit gaf ventilation calculator. Cobra exhaust vent 10 5 in.

Sizes 270 540s aluminum hood is designed with a removable top for easy access.