PV-12-C8 | 12" diameter, 8" tall collar
PV-16-C6 | 16" diameter, 6" tall collar
One of Our Premier Roof Vents: The Pop Vent
The Pop Vent Roof Louver is used for ventilating steep slope roofs. The Air Intake Roof Louver provides fresh air into the attic to extend the life of the building structure. As a result, it helps to keep insulation dry in the winter to prevent mold. In addition, the round design is aerodynamic to withstand wind speeds up to 200 mph.
The 1/8 inch opening between louvers is designed to prevent rain, snow, insects, and animals from entering inside the vent. The vertical louvers have been engineered to work better than insect screens by allowing air to freely flow in and out of the vent. As a result, allowing for proper attic ventilation.
The Pop Vent comes in an array of different diameter sizes and collar heights to fit the need of your roof. On the other hand, we have Pop Vents as Air Exhaust vents as well.
The Pop Vent roof louver has been installed in over 1 million homes since it debuted 35 years ago. To determine the number of vents you may need, see our Vent Calculator.
Net Free Area
in Sq. In.
|4" Collar||6" Collar||8" Collar||12" Collar|
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.