WPS4 features 4-gray laminate work surfaces and a steel frame that has a black powder coat paint finish. Units measures 18-1/4 in. x 34-1/2 ft. D x 41 in. H. The side shelf can be mounted at 33 in., 37 in. or 41 in. H. This model includes 3 in. furniture casters, 2-with locking brake. Easy assembly. Lifetime warranty.