Adjustable in height from 26" to 42" high in 2" increments. The three shelves are 18"D x 24"W with a 1/4" retaining lip. Top and middle shelves feature holes for cable management. Shelves are arc-welded and constructed from durable 20 gauge steel. Legs are constructed from thick 14 gauge steel. Four 4" silent roll, full swivel, ball bearing casters, two with locks, max.weight rated at 125 lbs. each. Will hold 200 lbs. evenly distributed. Included with every W42AE cart is a 3-outlet UL approved electrical assembly with a 15 ft. cord and cord management wrap. Includes a non-slip rubber mat for the top shelf.Locking Security Cabinet has a piano hinge and includes a set of two keys. Recessed chrome handle. Access hole in the back of the cabinet for easy cable management.