Inline Duct Blower, Round Centrifugal, Less Drive Package, Wheel Diameter 9 In, Drive Type Belt Drive, CFM Range 773 to 1708 @ 0.0 In SP, Maximum Inlet Temp. 200 Deg F, Bearing Type Self-aligning Pillowblock, 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, Includes Inlet & Outlet Flanges, and Type B Spark Resistance Construction, Agency Compliance AMCA Sound and Air, UL/cUL 705 Round Centrifugal In-Line Duct BlowersDesigned to exhaust or supply clean air or for fume exhaust applications. Housing is welded steel; backward inclined wheel is completely welded aluminum. Drive package components packed separately.UL 705. UL and C-UL Listed.Mount horizontally or vertically Max. inlet air temp.: 200 F Spark-resistant aluminum wheel and rub ring