DIMENSIONS — 36” W x 14.25” D x 31” H (28” H on leveling feet) 4 TIERS — Shelving system includes seven steel wire shelves (36” x 14”) in a durable graphite powder-coated finish. 9 BINS — 9 removeable high-impact polypropylene (HIPP) gray bins: 9 Large (10.5” W x 14” D x 7” H); Plus 3 bin dividers and 9 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.