Electric Chain Hoist Duty Classification H4 Mount Type Hook Mounted - No Trolley Maximum Lifting Capacity 551 lb Number of Speeds 2 Programmable Non-Programmable Fixed Lift Speed 15.7 fpm 63 fpm Trolley Speed Not Applicable Maximum Lifting Length 9 ft Current at Minimum Voltage 4.8 A Current at Maximum Voltage 4.8 A Motor Horsepower 1 1/4 hp Operating Voltage 230V AC Headroom 29 3/8 in For Minimum Beam Height Not Applicable For Maximum Beam Height Not Applicable