Box Packaging Inc RMU129W Side Loading Mailer 200 Pack

Product Description

The BOX PACKAGING INC RMU129W is a side-loading flat mailer designed to protect documents and flat materials during shipment without the need for additional stiffeners. Each mailer is constructed from 0.028-inch white chipboard, providing rigid, crush-resistant protection. The side-loading design speeds up the insertion process compared to top-loading alternatives. A peel-and-seal closure secures contents during transit, and a pull-tab strip allows recipients to open the mailer cleanly. This product is sold in a pack of 200 units, making it well suited for high-volume shipping operations.

These mailers are used in mailroom, fulfillment, and shipping environments where flat documents, photos, artwork, blueprints, or similar materials require rigid protection. The 12.25-inch by 9.75-inch interior opening accommodates standard large-format documents and presentation materials. The rigid chipboard construction eliminates the need to insert separate backer boards, reducing pack time on the line. Facilities processing large daily volumes of outgoing flat mail will find the 200-count pack a practical replenishment unit.

Key Features

• Side-loading opening speeds document insertion in high-volume fulfillment settings
• 0.028-inch white chipboard construction provides rigid, stiffener-free protection
• Peel-and-seal closure secures contents without tape or additional materials
• Pull-tab strip allows clean, easy opening on the receiving end
• White exterior surface accepts labels, stamps, and direct printing
• Sold in a 200-count pack for efficient replenishment

Compatibility

Designed as a standard side-loading flat mailer suitable for documents, photos, and flat printed materials measuring up to 12.25 inches wide by 9.75 inches in length.

Installation Notes

No tools are required for use. Insert contents through the side-loading opening, remove the peel-and-seal liner, and press the flap firmly to close. Store unused mailers flat in a dry environment to maintain chipboard rigidity and closure adhesive performance.