One of AVP's Premier Roof Vents: The Pop Vent
The Commercial Air Intake Pop Vent Roof Louver provides make up air for ducts, attics or plenums on flat or low slope roofs. For attic ventilation to occur, you need to remove hot moist air from your attic. This Commercial Roof Louver will bring in cool fresh dry air. This allows the attic to pressurize and exhaust out stale air.
The 1/8 inch opening between louvers under the lid will prevent rain, snow, insects, and animals from entering inside the roof vent. The vertical louvers work better than insect screens by allowing air to move freely into the vent for proper attic ventilation.
The Pop Vent comes in an array of different diameters and collar heights to fit the need of your roof. Pop Vents that Exhaust Air are also available.
Net Free Area
in Sq. In.
For any questions please see the frequently asked questions page. If you still have questions, email the sales team [email protected] or call 845-565-7770. If you are looking to determine the pitch of your roof, see the Roof Pitch Diagram.
Scroll down for Vent Calculator
The diameter size of all roof vents determines the Net Free Area, also known as the "NFA". NFA is the measured amount of opening each vent offers at each specific size. to be available for venting air through a specific vent size. The calculator below will find the overall number of vents needed to effectively ventilate the targeted attic space.
Once you have the area, pulldown to select the specific vent diameter to show the number of vents of that size which would ventilate the specified area with both 1/300 and 1/150 rule.
The roof vent calculation values shown above are for the exhaust portion of the roof. The same amount of net free air inches is needed for air intake as well. Proper roof ventilation consists of 50% air exhaust and 50% air intake.