About Master Flow™ Roof Louver RT65 Plastic Square‑Top
This plastic square-top utility vent is manufactured with UV-resistant polymer and includes pre-drilled nail holes for easy installation. Available in four popular colors, it provides 60 sq. in. (41,395 mm2) of NFA to help exhaust heat and moisture from the 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
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LARGE CAPACITY
Full 60 sq. in. (41,935 mm2) of net free ventilating area (NFA) per vent -
DURABLE CONSTRUCTION
Helps resist scratches and dents -
EASY TO INSTALL
Pre-drilled nail holes with extra-wide flashing area
Eligible accessory product in the Attic Ventilation Category of GAF Residential Enhanced and WindProven™ Limited Warranties*
Product Documentation
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MasterFlow® RoofLouver RT65 Plastic Square Top Installation Instructions TRILINGUAL - RESMF177
Installation Instructions and Guides
GAF’s Lifetime Roofing System
Ridge Cap Shingles
Cobra Attic Ventilation
Lifetime Shingles
Starter Strip Shingles
Roof Deck Protection
Leak Barrier
Tab 7
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