Square Corrugated Mailing Tubes

Measure the product after rolling, bundling and adding any cushioning or surface protection. Choose width and height that allow loading without forcing the item through the corners. Excess space can permit movement, while a cross-section that is too small can crease documents or stress the corrugated seams.

For a three-sided flat-surface alternative, compare triangle mailing tubes. For a close cylindrical fit around a rolled product, review round mailing tubes. Shape should follow the product and handling system.

Fold every tab and locking feature completely, keeping the contents away from the closure area. Use tape when the product weight, value or route calls for added retention. Apply labels to a flat panel without covering the manufacturer's joint or closure features, and keep barcodes smooth and readable.

Single-wall construction does not define a universal weight or stacking capacity. Long packages can bow when carried from one end or span unsupported conveyor gaps. Validate the completed package with the actual product, closure and route, and inspect corners and end panels for crushing, tears or moisture before use.