Gantry Crane, 1-Ton Capacity, Adjusts from 7'11" to 11'9" H, Inside Width: 7'10", I-Beam Flange x Height: 2.9" x 4.7", Base Width: 4 ft., Weight: 282 lbs., Black Powder Coated Steel, Includes (4) 5" Swivel Caster Wheels|JEGS Adjustable Height Gantry Crane 1-Ton.