These 5 x 5 x 18 inch kraft square mailing tubes are constructed from ECT-32-B corrugated board, delivering a rigid, protective enclosure for elongated items. The square cross-section is the defining advantage: it eliminates rolling during handling and staging, making tubes far easier to organize, stack, and process at the packing station than round alternatives.

The flat-pack design collapses for compact storage and assembles quickly without tape or glue, reducing labor at high-volume packing stations. Common applications include shipping architectural drawings, posters, fabric bolts, fishing rods, and dowels across e-commerce fulfillment, retail distribution, manufacturing, and general B2B logistics.

Each tube weighs approximately 0.408 lbs. The kraft corrugated construction presents a clean, professional exterior suited to both branded and unbranded outbound shipments. Tubes are sold in bundles of 25 and ship via parcel carrier.