4-inch Static Vent | Round Back Static Vent with Curb Mount Flange | Model RBV-4-C2-CMF
This 4-inch Round-Back Static Vent with Curb-Mount Flange is 4 inches in diameter with a 2-inch tall collar. In other words, this vent has 2 inches of clearance between the base and the inner louvers. The model RBV-4-C2-CMF has 12 inches of net-free area (NFA). All 4-inch static vents come with a standard 7.5 x 7.5-inch curb-mount flange.
Installation: The Curb Mount Flange will only fit over a Roof Curb with a 7-inch outer diameter.
This Static Vent removes hot air from the attic in the summer and moisture in the winter for year-round ventilation. Because of the curb mount flange, this vent is for installation on top of a roof curb. In other words, this flange will only fit over roof curbs or an existing base with a 7-inch diameter. This allows for easy access to the attic or duct below.
AVP's 4-inch static vents are compatible with the 6-inch and 12-inch tall roof curbs.
To determine the number of vents you may need, see our Vent Calculator.
How it works:
This static vent is ideal for venting bathroom fans or range hoods. Its round design is aerodynamic and can withstand wind speeds beyond 200 mph. The 4-inch Round Back Vent can be painted to match the color of the roof.
AVP's Round Back Vents have the power to withstand hurricane-force winds. See some of our customer feedback. However, if you want to ventilate a duct, please see our Round Back Roof Jack for vents with a tailpipe adapter. AVP also offers Static Vents with flat flanges so that the roof vents can be installed on asphalt shingle roofs with a pitch of 3/12 or greater.
For any questions, please see the frequently asked questions page. If you still have questions, email the sales team at sales@roofvents.com or call 845-565-7770
