Inline Duct Blower Round Centrifugal With Drive Package Wheel Diameter 9 In Drive Type Belt Drive CFM @ 0.000-In. SP 1299 @ 0.125-In. SP 1279 @ 0.250-In. SP 1260 Voltage 230/460 Motor HP 0.75 Height 35 In Width 17-5/8 In Maximum Depth 23 In Inlet Diameter 18-3/8 In Outlet Diameter 18-3/8 In Mounting Position Horizontal or Vertical Finish Polyester urethane Type B Spark Resistant Construction AMCA Sound Air UL/cUL 705