Bsc Preferred M333 Corrugated Mailers White 50 Pack

Product Description

The BSC PREFERRED M333 is a white corrugated mailer designed for shipping small, lightweight fragile items without the need for tape, glue, or staples. Manufactured from 200/ECT-32-B white corrugated board, each mailer folds to create double walls of protection on the front and sides, providing crush resistance during transit. The lightweight construction helps keep postage costs down without sacrificing structural integrity. This SKU is sold as a pack of 50 mailers, making it practical for shipping departments, fulfillment operations, and warehouse staff who need a reliable, self-sealing protective mailer on hand in volume.

The M333 mailer suits residential and commercial shipping applications where small, fragile goods need secure packaging. Typical use cases include e-commerce order fulfillment, parts distribution, and office shipping rooms. The self-folding design speeds up pack time on the line, and the corrugated construction provides a level of rigidity that protects contents from incidental compression during handling and transport. No additional packing materials or sealing supplies are required to close the mailer.

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 protection
• No tape, glue, or staples required for closure
• Lightweight construction helps minimize postage costs
• Sold in packs of 50 for volume use

Compatibility

Designed as an OEM-style equivalent to part number S-438. Suitable as a direct replacement or substitution for that reference in standard corrugated mailer applications.

Installation Notes

No tools are required to assemble the M333 mailer. Follow the fold lines as designed to ensure the double-wall structure is properly formed before inserting contents. Avoid overfilling beyond the intended capacity, as excessive load can compromise the self-locking closure. Store flat in a dry environment to maintain corrugated board integrity prior to use.