Electric Chain Hoist Duty Classification H4 Mount Type Motorized Trolley Maximum Lifting Capacity 500 lb Number of Speeds 1 Programmable Non-Programmable Fixed Lift Speed 14 fpm Minimum Lift Speed Not Applicable Maximum Lift Speed Not Applicable Trolley Speed 40 fpm Maximum Lifting Length 10 ft Current at Minimum Voltage 7.7 A Current at Maximum Voltage 3.9 A Motor Horsepower 3/8 hp Operating Voltage 115/230V AC Headroom 14 19/32 in For Minimum Beam Height 5 3/32 in