Master Flow ERV4BL Power Roof Mount Attic Fan Ventilators, 1000 CFM, Black Fluorescent 17% max manganese

17% max manganese

Variable speed delivers 1- 3100 strokes per minute

With wind baffle burner technology and a three-sided windscreen

4" Satin Nickel finish

Seamlessly stream music

Master Flow ERV4BL Power Roof Mount Attic Fan Ventilators, 1000 CFM, Black Fluorescent 17% max manganeseHighlights: Airflow CFM : 1000 Color : Black Net Free Area = 480 Sq. Ft. Pre 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 Energy efficient, uses up to 55% less electricity than