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The BSC PREFERRED M3330K is a pack of 25 square corrugated mailing tubes constructed from 200/ECT-32-B kraft corrugated material. Unlike round mailing tubes, the square profile prevents rolling during packing and shipping, making handling and stacking significantly more efficient. Each tube ships flat to conserve storage space and folds into shape quickly without tape or glue. These tubes are well suited for warehouse shipping operations, mailrooms, and distribution centers where speed and space savings matter.
The M3330K is designed for use in packaging and shipping applications where standard round tubes are prone to rolling or difficult to secure. The one-piece, self-locking construction reduces assembly time and eliminates the need for adhesives. Sold in packs of 25, these tubes are appropriate for medium-volume shipping operations. This product is equivalent to part number S-2966K.
Designed as a direct equivalent to part number S-2966K. Suitable for general corrugated mailing tube applications in packaging and shipping environments.
No tools are required for assembly. Fold the tube into its square form along the pre-scored lines before use. Ensure contents are properly secured inside the tube prior to sealing for shipment. Store flat until needed to maximize space efficiency.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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