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The BSC PREFERRED MFL12122 is a white corrugated document mailer box engineered for maximum protection of flat documents, files, and important paperwork during shipping and storage. Constructed from 200/ECT-32-B corrugated board, it delivers reliable crush resistance and structural integrity without added bulk. Protective side flaps and a front outside tuck closure secure contents without tape, glue, or staples, making setup fast and repeatable. Licensed installers and shipping professionals in office, warehouse, and trade environments rely on this mailer for sending blueprints, contracts, and flat materials that cannot be folded or bent.
This mailer is suited for light commercial and office shipping applications where document integrity is the priority. The tool-free assembly design supports high-volume packing operations, reducing labor time on the floor. Each pack contains 50 individual mailer boxes, making it practical for stockroom and fulfillment environments. This item is equivalent to part number S-13279, allowing straightforward substitution in existing procurement workflows. Packaging dimensions measure 22.5 inches by 31 inches by 5.5 inches, and the full pack weighs approximately 19.88 pounds.
Equivalent to part number S-13279. Designed as a direct substitute mailer box in document shipping and fulfillment applications where that part number is currently specified.
No tools are required to assemble this mailer. Fold along scored lines and engage the tuck closure before inserting documents. Store flat in a dry environment to maintain board integrity prior to use. Do not overload beyond the rated board strength of the corrugated material.
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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