Bsc Preferred M3325K Square Corrugated Mailing Tubes 25pk

Product Description

The BSC PREFERRED M3325K is a square corrugated mailing tube designed for packing and shipping applications where flat-sided geometry is an advantage over traditional round tubes. Constructed from 200/ECT-32-B kraft corrugated board, these one-piece tubes ship flat to conserve storage space and assemble without tape or glue, making them a practical choice for high-volume shipping operations. The square profile eliminates rolling during handling, staging, and transit, which reduces the risk of product movement and damage. Each pack contains 25 tubes. This product is equivalent to part number S-1578K.

These square mailing tubes are suited for warehouse, distribution, and fulfillment environments that require efficient, stackable tube mailers. The flat-pack design minimizes shelf footprint before assembly, and the no-tape, no-glue construction allows fast setup on the packing line. Typical applications include shipping posters, blueprints, drawings, and other rolled or elongated documents and materials that benefit from a tube-style mailer with stable, non-rolling geometry.

Key Features

• Square profile prevents rolling during handling and transit
• Ships flat to reduce storage space before assembly
• One-piece construction folds together without tape or glue
• Built from 200/ECT-32-B kraft corrugated board for structural integrity
• Equivalent to part number S-1578K
• Sold in packs of 25

Compatibility

Designed as a direct equivalent to part number S-1578K. Suitable for general-purpose mailing and shipping of documents, drawings, and similarly shaped items requiring a square corrugated tube mailer.

Installation Notes

No tools are required for assembly. Fold the tube along the pre-scored lines until the square profile is fully formed. No tape or adhesive is needed to secure the structure before loading contents. Store flat-packed units in a dry area away from moisture to maintain corrugated board integrity prior to use.