The RBV-3-C2-CMF-TP is a 3 inch roof jack for duct ventilation on top of a roof curb. This vent has a 3 inch inner diameter, 2 inch tall collar, and a 2 inch tailpipe with a curb mount flange. The curb mount flange allows for installation on a roof curb on flat roofs to provide additional clearance.
This 3 inch roof jack is engineered with a curb mount flange which is to be installed on top of a roof curb. In other words, this flange will only fit over roof curbs or an existing base of the same diameter. This allows for easy access to the attic or duct below. As a result, this gives the vent head extra clearance allowing for installation in all climate zones.
This roof jack is mainly for ventilating bathroom fans and range hoods. It allows for maximum airflow while alleviating back pressure.
The inner louver design prevents insects and wildlife from entering the duct. It also prevents rain or snow from entering. In addition, the round design is aerodynamic to withstand wind speeds up to 200 mph. It can also be painted to match the color of the asphalt shingles.
This Round Back Roof Jack with Curb Mount Flange has an all-aluminum construction. To clarify, this means they are durable, lightweight, and will not rust.
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