Exhaust Fan, Industrial/Commercial Direct Drive, Blade Dia. 24 In., CFM @ 0.000-In. SP 5658, CFM @ 0.125-In. SP 5236, CFM @ 0.250-In. SP 4740, CFM @ 0.375-In. SP 4295, Sones @ 0.000-In. SP @ 5 Ft. 21, Sones @ 0.125-In. SP @ 5 Ft. 15, Max. Ambient Temp. (F) 104 Degrees , Fan Voltage 115/230VAC, 60 Hz, 1 Phase, Exhaust/Supply Fan Motor HP 1/2, Motor RPM 1105, Motor Enclosure Totally Enclosed Air Over, Motor Insulation Class B, Bearing Type Ball, Full Load Amps 5.4/2.8, Watts 373, Height (In.) 28