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The BSC PREFERRED M863K is a pack of 50 kraft corrugated mailers designed for shipping small, lightweight fragile items while keeping postage costs low. Built from 200/ECT-32-B kraft corrugated material, these mailers fold to create double walls of protection on the front and sides, providing crush resistance without added bulk. No tape, glue, or staples are required to seal them, which speeds up packing workflows. The pack ships as a single unit and is suited for shipping rooms, fulfillment operations, and mailrooms that move moderate volumes of small goods.
These corrugated mailers are well suited for light-duty protective shipping applications in both commercial and light industrial environments. Typical use cases include shipping small hardware, parts, samples, documents, or other fragile lightweight items that require more protection than a padded envelope but do not warrant a full corrugated box. The self-folding design allows a single person to pack and seal an item quickly without additional materials. This product is equivalent to part number S-20999.
Designed as a standard self-sealing kraft corrugated mailer for general shipping and fulfillment applications. Equivalent to part number S-20999.
No tools or adhesives are required for use. Fold along the pre-scored lines to assemble the double-wall structure before inserting contents. Ensure the item fits within the interior dimensions before sealing to avoid overstuffing, which can compromise the self-locking closure. Store flat in a dry area to maintain material integrity.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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