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The BSC PREFERRED M12122K is a one-piece corrugated kraft mailer designed to reduce mailing costs while protecting contents during shipping. Built to 200/ECT-32-B corrugated board standards, it delivers reliable crush resistance for standard mailing and distribution applications. The mailer features scores at multiple depths, allowing the installer or packer to fold the sides inward at the correct depth for a snug fit around the product before sealing with tape. No tools are required. Sold in a pack of 50 units, it suits operations that need consistent, repeatable packaging without heavy material cost.
This mailer is used in light industrial, warehouse, and office shipping environments where products of varying thickness need a single adaptable outer wrap. The multi-score design makes it practical for packing books, flat goods, binders, small parts kits, and similar items. The kraft corrugated construction keeps unit weight low, which directly supports lower dimensional and actual weight charges across common carrier services. It is a direct equivalent to part number S-3177.
Direct equivalent to part number S-3177. Suitable as a general-purpose one-piece corrugated mailer for flat and semi-rigid products requiring a protective outer wrap during standard ground or parcel shipping.
Place the product in the center of the open mailer, then fold the scored sides inward at the depth that matches the product thickness. Seal all open edges with pressure-sensitive packing tape rated for corrugated cartons. Ensure the final assembly is fully closed with no open seams before applying carrier labels. No cutting or special tooling is required for standard 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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