Assembled/Unassembled: Assembled , Base Height: 1.75" , Base Size: 26" x 26" , Bearing Size: 3/4" , CFM @ 0.375-In. SP: 2683 , CFM @ 0.500-In. SP: 2602 , CFM @ 0.750-In. SP: 2602 , CFM @ 1.000-In. SP: 2225 , CFM @ 1.250-In. SP: 1968 , CFM @ 1.500-In. SP: 1568 , CFM Range: 4105 to 6003 , Drive Type: Belt Drive , Flange Depth: 1" , Flange Width: 1" , Frame Finish: Galvanized , Guard Material: Steel , Housing Material: Spun Aluminum , HP: 3/4 , Intake Guard No.: 1WBU3 , Max. Ambient Temp.: 104 F , Max. BHP: 0.79 , Max. Inlet Temp.: 300 Deg. F , Max. Operating Amps: 10.6A , Motor Enclosure: Totally Enclosed Air Over , Motor Insulation: Class B , Motor Type: AC induction motor , Number of Speeds: 1 , Overall Dia.: 28 7/8" , Overall Height: 28 1/8" , Phase: 1 , Recommended Damper Size (In.): 19 x 19 , Requires: Wall Collar and Shutter For New Installation , RPM: 1595 RPM , RPM Range: 785 to 1148 , Shaft Dia.: 3/4" , Shaft Dia. Wheel End: 3/4" , Sones @ 0.250-In. SP @ 5 Ft.: 18.5 , Sones @ 0.500-In. SP @ 5 Ft.: 16.1 , Speed Control: 48C172 , Speed Controllable: No , Weatherhood No.: 1WBV9 , Wheel Diameter: 14" , Wheel Material: Aluminum , Wire Guard Finish: Zinc Plated