H Wilsons WPS4 features four gray laminate work surfaces and a steel frame that has a black powder coat paint finish. Units measures 18 1/4" x 34 1/2D. The side shelf can be mounted at 31 1/2, 35 1/2"or 39 1/2 H. This model includes 3" furniture casters, two with locking brake. Easy assembly. Lifetime warranty.