"Vestil adjustable height industrial steel gantry crane is designed for transporting and positioning materials Gantry crane is NOT to be moved while loaded. Solid steel construction will provide years of service. Large 8in. diameter 4-position locking swivel phenolic casters with roller bearings will facilitate easy mobility from one area to another. U.S.A. Note All products should be inspected frequently to insure safe operation. Final testing and inspection is left to end user after final assembly has been completed. Base Width in. 77, Crane L x W in. 119 3/4 x 76 1/8, I-Beam to Ground in. 90-144, I-Beam H x W in. 6 x 4, I-Beam Length ft. 10, Load Capacity lbs. 4,000, Flange Width in. 4. Industrial steel gantry cranes are designed for transporting and positioning materials Solid steel construction provides years of service Large 8in. dia. locking phenolic casters with roller bearings facilitate easy mobility from one area to another when unloaded More economical and flexible than permanent cranes Quick setup design Height is adjustable in 6in. increments Order optional lever ratchet for easy one-person height adjustment Blue finish Also available in additional sizes Hoist and trolley sold separately"