Electric Chain Hoist Duty Classification H4 Mount Type Push Trolley Maximum Lifting Capacity 500 lb Number of Speeds 1 Programmable Non-Programmable Fixed Lift Speed 53 fpm Minimum Lift Speed Not Applicable Maximum Lift Speed Not Applicable Trolley Speed Not Applicable Maximum Lifting Length 20 ft Current at Minimum Voltage 4.8 A Current at Maximum Voltage 2.5 A Motor Horsepower 1 1/4 hp Operating Voltage 208-230/460V AC Headroom 16 5/16 in For Minimum Beam Height 3 in