20 x 36 (1mil) Flat Poly Bags 500/Case Discount_5933550108762_20 Expandable envelopes are great for

Expandable envelopes are great for shipping books and other bulky items

Pre-printed on each end of box for easy identification of files

Each mailer is weather and tamper resistant to avoid damages

One piece gusseted liners set up quickly and easily

Our Kraft Rigid Mailers will not bend or crush your product

20 x 36 (1mil) Flat Poly Bags 500/Case Discount_5933550108762_20 Expandable envelopes are great forPoly bag opening is always on the width dimension which can be heat sealed, or closed with twist ties or bag tape All poly bag sizes meet FDA and USDA specifications for food. Your product's contents are always visible through these clear low density polyethylene bags. Our bags are manufactured from seamless poly tubing and are bottom sealed for extra strength, no side seals or slit seals.