Active Ventilation Products
manufacturers of roof exhaust & intake vents,
solar attic fans, roof exhaust fans & more.
Click image to enlarge
311 First Street, Newburgh, NY 12550-4857
800-ROOF-VENT (766-3836)     Ph: 845-565-7770     Fax: 845-562-8963
Website: roofvents.com     Email: email@example.com                           5777-9
View the Roof Curb Product Page for more info and sizes or add to cart for this model size by choosing the option under "Base Types" to the right.
Add the Curb Mount Flange to your order for this model size by choosing the option under "Base Types" to the right.
Use our CFM calculator and chart to determine how many vents you need for your project.
Enter the length and width (in feet) or total square footage of your building in the fields below to determine how many vents are required based on the 1/150 or 1/300 Rule. This calculator is for the EXHAUST HALF ONLY. If an intake ventilator is needed, just double the amount of vents. For example, if 2 AV-14 are needed and inlet vents are needed, then an additional 2 PV-14 vents would be required