Bsc Preferred M331 Corrugated Mailers White 50 Pack

Product Description

The BSC PREFERRED M331 is a white corrugated mailer designed for shipping small, lightweight, and fragile items where crush resistance and low postage weight both matter. Manufactured from 200/ECT-32-B white corrugated board, each mailer folds to create double walls of protection on the front and sides. No tape, glue, or staples are required for closure, which speeds up packing operations. The M331 is sold in packs of 50 and weighs approximately 2.36 pounds per pack. Shipping and fulfillment staff in warehouse, retail, and trade supply environments use these mailers for outbound parcels that need lightweight but rigid protection.

The M331 mailer is suited for packaging departments, shipping rooms, and fulfillment operations sending small fragile components - such as fittings, sensors, gauges, or similarly sized trade parts - where dimensional weight and transit damage are both concerns. The self-folding design allows a single worker to prep and close each mailer quickly without additional sealing materials, making it practical for moderate-to-high daily shipping volumes.

Key Features

• Manufactured from 200/ECT-32-B white corrugated board for reliable crush resistance
• Folds to form double walls on front and sides for added transit protection
• No tape, glue, or staples required for closure
• Lightweight construction helps control postage and dimensional weight costs
• Pack of 50 mailers per unit of measure

Compatibility

Designed as a standard corrugated mailer for general-purpose shipping of small, lightweight fragile items. This product is equivalent to part number S-409.

Installation Notes

No tools or fasteners are required to assemble or close these mailers. Store flat in a dry environment to maintain board integrity before use. Avoid stacking heavy items on top of unboxed mailer stock, as moisture or compression can weaken corrugated board prior to use.