Bsc Preferred M4BK Corrugated Flat Mailer 50 Pack

Product Description

The BSC PREFERRED M4BK is a white corrugated flat mailer designed for mailing books, catalogs, framed pictures, and similarly sized rigid or semi-rigid items. Built from 200/ECT-32-B white corrugated stock, this mailer provides a clean, professional appearance while delivering the structural integrity needed to protect contents in transit. The mailer is scored at multiple depths, allowing the packager to dial in the correct box depth for the item being shipped without pre-forming or setting up a traditional carton. Sold in a pack of 50 units, it suits high-volume shipping operations as well as lower-throughput environments that still demand consistent, reliable packaging.

This flat mailer is well suited to fulfillment centers, print shops, art dealers, bookstores, and any operation that routinely ships flat or framed goods. The wrap-around design requires no carton assembly: place the item in the center, fold the scored sides to the desired depth, and seal with tape. The white corrugated exterior presents a finished look without the need for additional outer packaging. It fits naturally into standard shipping workflows wherever protective mailers are preferred over standard RSC cartons.

Key Features

• 200/ECT-32-B corrugated construction provides edge crush resistance suitable for stacked shipping environments
• Scored at multiple depths for adjustable fit without cutting or modifying the blank
• No carton setup required - fold, wrap, and tape in one motion
• White exterior finish delivers a clean, professional presentation
• Sold in a quantity of 50 per pack for efficient inventory management
• Equivalent to part number S-348

Compatibility

Designed as an OEM-style replacement equivalent to part number S-348. Suitable for use with standard poly tape or water-activated tape closure systems. Compatible with books, catalogs, framed pictures, and flat rigid items of appropriate dimensions.

Installation Notes

No tools are required for assembly. Place the item in the center of the flat blank, fold the pre-scored sides to the desired depth, and secure all seams with appropriate shipping tape. Ensure the tape seal covers all flap edges to prevent opening during transit. For fragile items such as framed pictures, consider adding void fill or corner protectors before sealing.