Master Flow ERV4 Power Roof Mount Attic Fan Ventilators, 1000 CFM, Mill Farm & Implement Material: 50% recycled rubber

Material: 50% recycled rubber

Clamping Strength: 1000 lb

Make a zipper door for dust thermal containment in minutes

Special formula makes starting engine after storage quick and easy

Hardware finish: Brushed Nickel

Master Flow ERV4 Power Roof Mount Attic Fan Ventilators, 1000 CFM, Mill Farm & Implement Material: 50% recycled rubberHighlights: Airflow CFM : 1000 Color : Mill 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 typical