Master Flow ERV4WW Power Attic Ventilators Roof Mount, Weather Wood Hole Saws Good disease and insect resistance

Good disease and insect resistance

Brand:"Premier"

2-3/8" or 2-3/4" backset

Two position saw hook for safe rafter placement

Master Flow ERV4WW Power Attic Ventilators Roof Mount, Weather Wood Hole Saws Good disease and insect resistancePre 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