This is heavyweight, tough storage. Heavy duty, extra strong injection molded, high-density polyethylene bins are great transportation or storage of large, heavy parts. Ribbed reinforced walls ensure ultimate strength. Double wall thickness with preformed lip allows bin to interlock and provides up to 150 lbs. stack capacity. Molded-in divider slots & label slots allow full utilization. Open hopper front allows immediate access and visibility. Easy to handle: you can transport these bins easily with rear-molded handle. Impervious to most solvents, corrosion, rust and rot resistant. Resists temperatures from -40°F to 250°F. Optional window maximizes storage and prevents spillage.