11 x 13 x 4 Expansion Poly Mailers 100/Case Type D Water resistant

Water resistant

tamper evident closure

5 - 18 x 18 x 16" Deluxe Packing Boxes

Each mailer is lined with packing bubble material to keep items safe during shipping as well as a self-seal strip for easy closure

Sizes shown are the inside dimensions of the box in the following order: Length

11 x 13 x 4 Expansion Poly Mailers 100/Case Type D Water resistantFeatures a gusseted bottom to allow for thicker items such as binders, books and catalogs. Puncture, moisture, tamper and tear resistant. High strength seams will keep contents intact even if over packed The outer surface of the mailer is white and the inner lining is silver. Labels, ink and stamps adhere well. Self seal closure with a double perforation tear strip for easy opening.