Electric Chain Hoist Duty Classification H4 Mount Type Motorized Trolley Maximum Lifting Capacity 4 000 lb Number of Speeds 1 Programmable Non-Programmable Fixed Lift Speed 7 fpm Minimum Lift Speed Not Applicable Maximum Lift Speed Not Applicable Trolley Speed 40 fpm Maximum Lifting Length 15 ft Current at Minimum Voltage 23.9 A Current at Maximum Voltage 12 A Motor Horsepower 1 1/4 hp Operating Voltage 115/230V AC Headroom 22 3/32 in For Minimum Beam Height 4 29/32 in