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.

Features & Benefits


*Compared to typical 50 sq. in. NFA (32,258 mm2) roof vents. 

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

Eligible accessory product in the Attic Ventilation Category of GAF Residential Enhanced and WindProven™ Limited Warranties*

*15-year WindProven™ Limited Wind Warranty covers GAF Shingles with LayerLock® Technology only and requires the use of GAF Starter Strips, Roof Deck Protection, Ridge Cap Shingles, and Leak Barrier or Attic Ventilation. See GAF Roofing System Limited Warranty for complete coverage and restrictions. Visit gaf.com/LRS for qualifying GAF products. For installations not eligible for the WindProven Limited Wind Warranty, see GAF Shingleand Accessory Limited Warranty, Master Flow™Ventilation Products Limited Warranty,or Master Flow™ Powered Ventilation Products Limited Warranty (depending on product) for complete coverage and restrictions.

Product Documentation

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