Model# 4505 Structural foam construction, 400-lb. capacity. Flat shelves provide a smooth worksurface and allow easy loading. Molded-in wraparound handle with convenient storage bin. Front mounting bracket holds wastebasket, extension cord, or power strip. 5" nonmarking casters (two locking swivel). 33-3/10"" high. Optional middle shelves (RCP 4594 and RCP 4595) sold separately. Assembly required