Partners Brand Self-Seal Flat Mailers 12 3/4 x 15 Kraft PK100

Partners Brand Self-Seal Flat Mailers

These Partners Brand self-seal flat mailers measure 12 by 15 inches and come in a Kraft finish. A pack contains 100 mailers for high-volume shipping needs. The self-adhesive closure removes the need for tape or staples. They suit offices, warehouses and e-commerce sellers dispatching documents or flat goods.

Peel-and-seal closure speeds up packing

Remove the protective strip, fold the flap and press to seal; no tape dispenser or moistener is required. The adhesive activates on contact and holds through normal transit handling. Ensure the flap is fully pressed across its width, otherwise the seal can lift at the edges. Overstuffing beyond the flat profile may also prevent a clean closure.

Check contents fit the 12 by 15 envelope

Verify that your items lie flat within the 12 by 15 inch dimensions before ordering. Rigid or bulky objects can stress the seams and cause tears. The Kraft paper resists moisture but is not waterproof, so consider an outer poly bag for wet climates. Confirm your postage scale and carrier accept this flat-mailer format.