Master Flow ERV4BL Power Roof Mount Attic Fan Ventilators, 1000 CFM, Black Drain Pipe Sleeves / Accessories Performance-HVI 2100 certified

Performance-HVI 2100 certified

Bevel Protractor for measuring and laying out angles

Covers 500 to 600 sq

Cap Gallon: 20-30

Warning: This product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm

Master Flow ERV4BL Power Roof Mount Attic Fan Ventilators, 1000 CFM, Black Drain Pipe Sleeves / Accessories Performance-HVI 2100 certifiedHighlights: 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