About Master Flow™ Roof Louver IR65 Plastic Slant‑Back

Our best plastic slant-back roof louver with built-in screen is an excellent choice to help protect against weather infiltration, especially in steep-slope applications.  It's manufactured with UV-resistant polymer and a snap-in hood to help ensure lasting performance on the roof.  Its extra-large flashing is pre-punched nail holes for reduced chance of leaks and easy installation.  Available in four popular colors, it provides a large 65 sq. in. (41,935 mm2) of NFA to help exhaust heat and moisture from your attic.

Note: Always have a balanced ventilation system. In no case should the amount of exhaust ventilation exceed the amount of intake ventilation.