Fan Blade, Spark Resistant, Propeller Dia 20 In, Blade Material Cast Aluminum, Number of Blades 4, Bore Dia. 5/8 In, Pitch 13 Deg, Motor HP 1/2, Motor RPM 1725, Rotation Facing Discharge CW, Number of Set Screws 2, CFM @ 0.000-In SP 4675, @ 0.125-In SP 4025, @ 0.250-In SP 3430, INCLUDES 2 Set Screws |