Exhaust Fan, Heavy Duty Direct Drive, Propeller Dia. (In.) 12, CFM @ 0.000-In. SP 1286, CFM @ 0.125-In. SP 1192, Sones @ 0.000-In. SP @ 5 Ft. 11.2, Voltage 115/230, 60 Hz, 1 Phase, Full Load Amps 3.1/1.6, Motor HP 1/4, Totally Enclosed Air Over, Bearing Type Ball, Motor RPM 1750, Max. Ambient Temp. (F) 104, Height (In.) 16, Width (In.) 16, 16, 12-3/8, 1, 2-1/2, 12-3/8, Mounting Position Horizontal, Frame Material Galvanized, Steel, Propeller Material Aluminum, Number of Blades 5 RestrictionsNote: Automatic shutters recommended; see Index under Shutters, Exhaust. On DrillSpot.com , search by DrillSpot Item Number and click the Optional Accessories tab. OSHA-complying guards (included with select models) are required when a fan is installed within 8 ft. of floor, working level, or within reach of personnel. Review OSHA codes and UL standards. See Index under Guards, Fan. Industrial UnitsDirect-Drive Venturi Exhaust FansExhaust larger volumes of air at higher static pressures. For use in factories, foundries, and other industrial environments.Galvanized frame and finish.UL and C-UL Listed.Mount: horizontal With Intake Guards, vertical or horizontal Without Intake Guards Motors: totally enclosed air over, with Class B insulation Ball bearings, except sleeve bearings on 10D952 to 10D956 Max. ambient temp.: 104 F Aluminum propellers Optional speed controls sold separately