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The BSC PREFERRED M533K is a pack of 50 kraft corrugated mailers designed for shipping small, lightweight, and fragile items through standard mail or parcel services. Constructed from 200/ECT-32-B kraft corrugated board, these mailers deliver a solid strength-to-weight ratio that keeps postage costs low without sacrificing protection. When folded, the design creates double walls of protection on the front and sides, providing crush resistance during transit. No tape, glue, or staples are required to seal them, which speeds up packing workflows in warehouse, fulfillment, and supply house environments.
These mailers are suited for light-duty packaging applications where controlling shipping weight is a priority. They work well for small parts, documents, samples, or other items that require more than an envelope but do not need a full corrugated box. The self-locking fold design makes them practical for high-volume packing operations or one-off shipments alike. Each pack contains 50 mailers, making it easy to stock and replenish at the workbench or shipping station.
Designed as a general-purpose corrugated mailer suitable for standard small-parcel and mail shipping applications. Equivalent to part number S20502.
No tools or fasteners are required to assemble or seal these mailers. Fold along the scored lines and tuck the locking tab to close. Ensure contents are properly cushioned before sealing, particularly for fragile items. Store flat in a dry location to maintain board integrity prior to use.
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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