11 x 13 x 4 Expansion Poly Mailers 100/Case 12x12 box Each box has a front

Each box has a front panel write-on space for easy content identification

one side white

Constructed of heavy duty black plastic that is made to last

slide it into the clear plastic holder and snap in place

Customize your unit by choosing the bin sizes of your choice

11 x 13 x 4 Expansion Poly Mailers 100/Case 12x12 box Each box has a frontFeatures 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.