38" x 54" - 1 1/2 Mil Flat Poly Bags. Economical light-weight Poly Bags protect products from dirt, dust and moisture. Bags are manufactured from 100% virgin, high clarity polyethylene film. Meets FDA and USDA specifications. Close bags with twist ties, bag tape or by heat sealing. Available in case quantities. 200/Case.SHPPB327. PB327. Shoplet select Shoplet select 1 1/2 Mil Flat Poly Bags.