This Round Back Static Vent is 4 inches in diameter and is built with a 2 inch tall collar. Engineered for all weather zones 1 through 8 as long as the roof pitch is 4/12 or greater and the exhaust vent is installed no lower than 18 inches from the peak of the roof.  This static vent can be installed down to 3 feet from the peak in climate zones 1 – 4 as long as the roof pitch is 3/12 or greater. The model RBV-4-C2 has 12 inches of Net Free Air, and its square base (flange) is 10 inches by 10 inches.

RBV-4-C2 is best used for a 3/12 to 12/12 roof pitch. This static roof vent is rated to go beyond 200 MPH of wind pressure. Certified by UL as well as Florida Building Code, the toughest in the nation, The Texas Department of Insurance and upholds California Fire Code 706A.2.  Constructed entirely out of aluminum makes this static vent line highly resistant to corrosion and will remain rust free.

The roof vents lid is manufactured out of one piece of spun aluminum that prevents rain and snow from entering the static vent. Its low profile design looks pleasing on shingle roofs and it can be powder coated (Painted) in an array of colors. The powder coating finish (looks like regular paint) adheres extremely well to metal vents which ultimately add to the vents durability and long lasting clean appearance.

• Small Static Vent is an excellent choice for venting a bathroom fan or small space.
• Built-in inner vertical louver cylinder has a 1/8 in. opening between louver blades that will keep out insects, birds, and animals out while allowing air to move through the vent without resistance
• 1/8th in. opening between the louver blades and all aluminum (“noncombustible”) material meets the requirements of California fire code 706A.2 vents to resist the intrusion of burning embers and flame through ventilation openings
• 2 in. clearance between bottom of vent cap and flange