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The BSC PREFERRED RMU129W is a lightweight, side-loading stayflat mailer constructed from 100% recycled paperboard and sold in cases of 200. The mailer is designed to keep contents flat during transit and uses a pressure-sensitive closure for fast sealing without moisture activation. A built-in tear strip allows recipients to open the mailer cleanly without tools or scissors. The RMU129W is suited for distribution centers, mailrooms, and fulfillment operations that need a cost-effective, environmentally responsible packaging option for flat or low-profile items.
This mailer is used for shipping soft goods, photographs, documents, and promotional materials in commercial and light industrial fulfillment environments. The side-loading design simplifies insertion of flat items compared to top-loading configurations. Packaging and shipping operations that process high volumes of flat mail pieces will find the case quantity of 200 units practical for reducing restocking frequency. The recycled paperboard construction supports sustainability initiatives without sacrificing structural integrity for standard postal and courier handling.
Designed as a stayflat mailer suitable for standard postal and commercial courier shipment of photographs, documents, soft goods, and promotional items.
No tools or equipment are required to seal the RMU129W. Peel the pressure-sensitive liner, insert contents through the side opening, and press the flap firmly to close. Store unused mailers flat in a dry environment to maintain closure adhesive integrity. Follow carrier and postal guidelines for maximum content thickness and weight per piece.
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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