DIMENSIONS — 48” W x 14.25” D x 56” H (53” H on leveling feet)7 TIERS — Shelving system includes seven steel wire shelves (48” x 14”) in a durable silver powder-coated finish.21 BINS — 21 removeable high-impact polypropylene (HIPP) gray bins: 6 X-Large (16” W x 14” D x 7” H) and 15 Large (10.5” W x 14” D x 7” H); Plus 4 bin dividers and 21 bin labels.MOBILE SYSTEM – Durable 3” diameter rubber wheels (two locking) allow for easy mobility.PATENTED BIN TILT LOCKING DESIGN — The bins feature a patented design (US Pat. #7,325,697) with a tilt locking feature allowing easy access to the bin’s contents.