Inline Centrifugal Duct Fan Housing Material Galvanized Steel Fits Duct Dia 10 In. Voltage 120V Max Amps 1.96 Max Wattage 196 Number of Speeds 1 Housing Dia 13-3/8 In. Length 6-7/8 In. Motor RPM 3000 CFM @ Duct 589 CFM @ 0.000-In. SP 589 CFM @ 0.125-In. SP 570 CFM @ 0.250-In. SP 553 CFM @ 0.375-In. SP 538 CFM @ 0.400-In. SP 531 CFM @ 0.500-In. SP 517 CFM @ 0.600-In. SP 503 CFM @ 0.750-In. SP 480 CFM @ 0.800-In. SP 472 CFM @ 1.000-In. SP 441 CFM @ 1.200-In. SP 400