Winco PTSC-6 6 Quart Storage Container Square with Built-in Handles PolypropyleneWinco offers a wide selection of NSF listed boxes and containers to meet all your food storage needs. Our food storage containers come in round and square shapes, in both clear polycarbonate (PC) and polypropylene (PP). Polypropylene is stain resistant, withstands temperatures from 40F to 160F, and is ideal for the storage and transport of prepared food only Built in handles Graduation markings in liters and quarts Dishwasher safe NSF listed BPA free