Exhaust Fan, Medium Duty Belt Drive Less Drive Package, Blade Dia. 36 In., CFM Range 12,492 to 19,733, Exhaust/Supply Fan Motor HP 1/2 to 3, Drive Package With Motor Included No, Max. Ambient Temp. (F) 104, Width (In.) 40, RPM Range 433 to 684, Height (In.) 40, Bearing Type Regreasable Pillow Block, Max. Depth (In.) 22, Venturi Clearance Dia. (In.) 36-3/8, Venturi Depth (In.) 6, Flange Depth (In.) 1, Flange Width (In.) -, Mounting Position Horizontal or Vertical, Frame Material Galvanized Steel