Bin Lids "See-through" crystal styrene lids keep contents dust-free and protected. Assembly required - hinge pins included.Molded of high-impact polypropylene and unaffected by weak acids or alkalis. Water, rust and corrosion-proof. Guaranteed not to crack or break under normal load conditions. These bins, made of polypropylene block copolymer, are autoclavable up to 250 degrees F. Available in Red (R), Blue (B), Yellow (Y), Stone (ST), Green (GR), Semi-clear (SC), and Black (BK). Priced per piece, sold in full carton quantity only.See the AkroBins Chart for determining quantity of same size bins required to fill each panel, bins sold separately.