Quantum Storage Systems Wire Shelving 5-Shelf Starter Units - 12"Wx 48"Lx 54"H - Black Shelf capacity Starter kits come complete with 4 posts and 5 shelves. Heavy-duty shelving unit allows up to 800 lb. Outside Dimensions: 12" x 48" x 54",Finish: Black. Shelf Dimensions: 12"W x 48"L