Electric Chain Hoist Duty Classification H4 Mount Type Motorized Trolley Maximum Lifting Capacity 1 000 lb Number of Speeds 2 Programmable Programmable by Internal Controls Fixed Lift Speed Not Applicable Minimum Lift Speed 4.2 fpm Maximum Lift Speed 25 fpm Trolley Speed 80/13 fpm Maximum Lifting Length 20 ft Current at Minimum Voltage 3.3 A Current at Maximum Voltage 3.3 A Motor Horsepower 1 hp Operating Voltage 380-460V AC Headroom 17 5/16 in For Minimum Beam Height 4 13/16 in