This TPI whole-house attic fan reduces your summer cooling costs. Open the windows and let the fan pull hot air from your home and exhaust it out through the attic. U.S.A.Application Pulls hot air from the home and exhausts it out the attic Diameter (in.) 36 Speeds (qty.) 2. * Two-speed motor * Shutters automatically open when in use and close when turned off * Can be installed without cutting joists
