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: firstname.lastname@example.org                           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.
Step 1: Calculate the square footage of the attic (feet)
Enter the height at the attic's highest point (feet)
Step 3: Choose your roof type
Total cubic footage of your attic:
Step 4: Choose air change rate per hour
Total cubic feet of air to be exhausted per hour:
Step 5: Pick the fan to be used
Total number of fans required:
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
Length of roof
Height of roof
Total square feet
Total vents needed
Distance needed between vents
Taking the Aura Solar Attic Fan and improving it's performance by adding a second solar panel. The improved performace is by increasing the sun exposure time. No one solar panel can supply full current for more than 4 hours due to the suns movement in relation to the solar panel. With the tandem solar panel system, the performance is doubled from 4 hours up to 8 hours.