For sale is a 3 Ton Handling Systems (HSI) Gantry Crane on casters John Sakash 3-ton manual hoist CM Mercury 3-ton Roller Bearing Trolley Complete system, ready to go! Overall dimensions are 14.5 ft x 7.5 ft x 13.2 ft Bottom part of I-Beam is 12 ft above ground. 12 ft SPAN.