Description:Akro-Mils industry leading 4" tall Shelf Bins are constructed of durable industrial-grade polymers and provide a neat and attractive storage solution. The superior construction of these affordable bins makes them a superior alternative to weak and flimsy cardboard bins. 12", 18" and 24" deep bins work with standard wire or steel shelving. One-piece construction is waterproof and unaffected by grease or oil. Works in temperatures down to -20°?F.,