Master Flow ERV4BL Power Roof Mount Attic Fan Ventilators, 1000 CFM, Black Fluorescent Warning: This product can expose

Warning: This product can expose you to chemicals known to the State of California to cause cancer

Indoor or Outdoor: Indoor and Outdoor

17% max manganese

Seamlessly stream music

Master Flow ERV4BL Power Roof Mount Attic Fan Ventilators, 1000 CFM, Black Fluorescent Warning: This product can exposeHighlights: 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