Master Flow ERV4WW Power Attic Ventilators Roof Mount, Weather Wood Cable Meets all UL 498 requirements

Meets all UL 498 requirements

Pipe threads are not interchangeable with flare or compression threads

Head Type: Forged Milled

Hardens in 15 min

Contains everything needed to make a screen frame that will accept aluminum fiberglass mesh screen or flexible poly film

Master Flow ERV4WW Power Attic Ventilators Roof Mount, Weather Wood Cable Meets all UL 498 requirementsPre wired roof mount attic vent and thermostat control; helps exhaust large amounts of hot and humid air from your attic; helps protect your roofing system and promotes your home's energy efficiency; energy efficient PSC (permanent split capacitor); includes internal heavy duty screen which helps prevent animal infestation. Highlights: Roof Mount Galvanized Steel Max Attic Size = 1600 Sq Ft Net Free Area = 480 Sq. Ft. Color : weather wood Airflow Cfm