Product Description Mixed Flow Duct Fan, Housing Material Thermoplastic, Fits Duct Dia. 6 in, Voltage 120V, Max. Amps 0.54 A, Max. Wattage 65/54, Number of Speeds 2, Housing Dia. 7 7/8 in, Length 8 3/8 in, Motor RPM 2300/1700, CFM @ 0.000-In. SP 293/218, CFM @ 0.125-In. SP 273/193, CFM @ 0.250-In. SP 227/128, CFM @ 0.375-In. SP 227/128, CFM @ 0.500-In. SP 206/105, CFM @ 0.750-In. SP 131/24, CFM @ 1.000-In. SP 35, Max. Inlet Temp. 104 Degrees F, Inlet and Outlet Dia. 5 7/8 in, Motor HP 1/10 hp From the Manufacturer The extensive range of the TD-MIXVENT series makes it an effective solution for a wide range of residential and light commercial ventilation installations.