Industrial Gantry Crane is designed to be portable and offer more flexibility than permanent cranes. I-beam mounting plate design offers quick set-up. Heavy duty steel construction with chip-resistant enamel finish is ideal for warehouse or machine shop, indoor or outdoor. Four 8" phenolic wheel 4-position swivel lock casters ease movement between work areas. Telescopes in 6" height increments using forklift or with optional lever ratchets for one-person adjustment. Note: Use Crane to Lift Loads only.**Height is measured from underside of I-Beam to Floor NOTE: All gantries should be inspected frequently to insure safe operation. Final testing and inspection is left to end user after final assembly has been completed. For further details see ASME B30.17.