1250 CFM Weathered Wood Galvanized Steel Electric Powered Attic Fan with Thermostat Controlled Hardscapes Edging 4 1 2 in Maximum Shaft Length 6 in Color Finish:Bianco Starlite 4 1 2 in Maximum Shaft Length 6 in Minimum Shaft Length 1 1 2 in Cushioned Grip No Insulated No Magnetic No Multi Bit No Ratcheting No Allen Drive Included No Hex Drive Included No Flat Drive Included Yes Phillips Drive Included Yes Pozidriv Drive Included No Square Drive Included Yes Torx Drive Included Yes Set Individual Set Drive Size Set Warranty Limited lifetime CA Residents: Prop 65 Warning(s) No UNSPSC 27111700 Blade Material Finish Hardened and tempered steel Easy Hardwired Install: Includes hardware for straightforward wall mount setup Energy efficient uses up to 55% less electricity than typical competitors’ vents (based on GAF testing at 120 Volt) Heavy duty internal screen helps prevent animal infestation