FORMED 12 GAUGE SHELVES WITH EXTRA REINFORCEMENT ARE WELDED TO 2"" X 2"" CORNER ANGLES. HEAVY SERVICE CASTERS HAVE LARGE TOP PLATE AND SWIVEL RACE. FOUR SWIVEL CASTERS PROVIDE MAXIMUM MANEUVERABILITY. 4-POSITION SWIVEL LOCKS ON ONE END WILL CONVERT SWIVEL CASTERS INTO RIGID. FLOOR LOCK ON OTHER END PREVENTS UNWANTED MOVEMENT WHEN NECESSARY. OVERALL HEIGHT 36"". POWDER COATED FINISH.