Dryer Booster Duct Fan Voltage 120VAC Housing Dia 9-3/4 In. Housing Height 8-15/16 In. Duct Dia 4 In. Inlet Dia 3-7/8 In. 60 Hz Max Amps 0.73 83 Watts Motor RPM 2800 CFM @ 0.000-In. SP 170 CFM @ 0.200-In. SP 150 CFM @ 0.400-In. SP 134 CFM @ 0.600-In. SP 119 CFM @ 0.800-In. SP 103 CFM @ 1.000-In. SP 86 CFM @ 1.500-In. SP 78 Wheel Type Backward Inclined Includes Mounting Bracket 5-1/2 Ft Power Cord With Plug