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This Tamarack Insulated Whole House Fan cools your entire house for less than the cost of operating a light bulb. Energy-efficient operation drastically reduces air conditioner use by drawing in cooler outside air and exhausting hot indoor air. U.S.A. Air Delivery CFM 1,150, Amps 65, Volts 115, Watts 78, Power Cord ft. Hardwire, Speeds qty. 1. R-38 insulated doors create an airtight seal between the attic and living space when not in use Mounts horizontally or vertically on either 16in. or 24in. on-center floor or wall joist Requires hardwire electrical connection for power and fan control UL listed