This mobile presentation cart has four gray laminate work surfaces with a black steel frame. The adjustable second shelf can be set from 33" up to 41" high. Locking wood laminte cabinet model inner dimensions are: 18¾"H x 13¾"W x 13¾"D. A set of heavy duty 4" full swivel ball bearing casters, two with locking brakes. Optional side shelf accessory is available. Easy assembly. Lifetime warranty.