To earn a UL certification, the entire manufacturing process, from material selection to product design, has to meet strict guidelines and pass rigorous tests. All testing for AVP's Keepa Vent, Round Back Vent, and Universal Vent were conducted by UL at their testing facilities in Northbrook, IL. The testing protocol was to pass the requirements for the Florida Building Code and the Texas Department of Insurance. The test conducted was the E330 pressure test.
This test reconstructs simulated high wind environments to examine the performance of the roof vents under extreme conditions up to 230 MPH.
Click here to view Documentation Source on UL Website

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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.

Calculate 1/300 rule:

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Calculate 1/150 rule:

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Sq. Feet of Floor - 1/150 Sq. Feet of Floor - 1/300 Net Free Vent Area in Sq. Inches Net Free Vent Area in Sq. Feet
08' Diameter 0 0

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

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roof vents - attic fans - Solar Attic Fans - Round Back Solar Fan - RBSF-08-C02
RBSF-08-C02 Specs Emperial Metric
Fan Count (Solar Only): 1 n/a
Total Fan Wattage: 3.60 n/a
Solar Power CFM: 81 n/a
Total CFM Output @0.1 SP: 365 n/a
Bearing Type: Ball Bearing n/a
Fan Speed RPM: 2,200 n/a
Noise Level in dBa: 25 n/a
Air Flow in CFM: 81 n/a
Rated Voltage in DC: 12 n/a
Rated Current in Amps: 0.30 n/a
Life Hours: 40,000 n/a
Solar Panel Specs
Watt: 5 n/a
Operating Voltage: 12 n/a
Maximum Voltage: 17 n/a
Max Amps: 0.29 n/a
Operating Temp: -40°C to 85°C n/a
Power Tolerance: ± 3% n/a
Cells: Polycrystalline silicon solar cell n/a
Number of Cells: 36 n/a
Module Dimension: 222mm[8.74in.]x270mm[10.63in.]x18mm[0.71in.] n/a
Solar Panel Weight: 0.75kg[1.65lbs] n/a
Vent Specs
Inside Diameter: 8” 20.32 cm
Outside Diameter (Width of Vent Head): 11” 27.94 cm
Flat Flange (Length x Width): 13” 33.02 cm
Height of Head: 8” 20.32 cm
Collar Height: 1” 2.54 cm
Total Height with Collar: 10” 25.4 cm
Minimum Pitch Capacity: 3/12 n/a
Maximum Pitch Capacity (Modified): 5/12 n/a
Free Air Space (sq. inches): 50 sq in 322.58 sq cm
Free Air Space (sq. feet): 0.35 sq ft 0.033 sq m
1:150 Ventilation Rule (sq. feet): 100 sq ft 9.29 sq m
1:300 Ventilation Rule (sq. feet): 200 sq ft 18.581 sq m

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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.

Roof Curb Literature

Add the Curb Mount Flange to your order for this model size by choosing the option under "Base Types" to the right.

Curb Mount Flange Literature

Enter the length (in feet), and number of vents required for your building in the fields below to determine the distance between vents on your roof.

Distance Required Between Vents:

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Roof Vents
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