3-inch Static Vent | Round Back Static Vent with Curb Mount Flange | Model RBV-3-C4-CMF
This 3-inch Round-Back Static Vent with Curb-Mount Flange is 3 inches in diameter with a 4-inch tall collar. In other words, this vent has 4 inches of clearance between the base and the inner louvers. The model RBV-3-C4-CMF has 7 inches of net-free area (NFA). All 3-inch static vents come with a standard 6.5 x 6.5-inch curb-mount flange.
Installation: The Curb Mount Flange will only fit over a Roof Curb with a 6-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 assembly on top can act as a hatch for the roof curb below. This flange will only fit over roof curbs or an existing base with a 6-inch diameter, allowing for easy access to the attic or duct below.
AVP's 3-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 3-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 vents with tailpipe adapter. AVP also offers Static Vents with flat flanges so that they 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
