These bright shiny chrome plated carts are as versatile as they are practical. Three sturdy 18" x 48" wire shelves and one solid shelf have full shelf length center supports for outstanding strength. Shelves are adjustable in 1? increments. Each shelf can hold up to 500 lbs. of evenly distributed weight. The casters are rated for a maximum total weight of 1,000 lbs. per unit (250 lbs. each). A solid metal bottom shelf with a sturdy silver powder coated finish will ensure that you meet healthcare codes and will clean easily. When used in conjunction with our flame retardant 200 denier urethane coated nylon covers you can transport this unit in any healthcare environment and meet applicable codes. All sizes roll easily on our quality 5" casters - two locking. Covers are available for all size units. This unit is NSF approved. Easy to assemble without tools.