3 x 18 1/4 Triangular White Corrugated Mailing Tube 50/Bundle

These white 200 lb. test corrugated mailing tubes feature a triangle - shaped design. It's super easy to insert and remove items. They ship flat, saving you a lot of space. Once put together, they can rest stably on flat surfaces without rolling off. The heavy - duty triangle shape provides extra side protection. Note that all sizes below are measured by the mailers' inside usable dimensions (diameter x length).

Using these triangular mailing tubes is a breeze. First, unfold the flat - shipped tube and assemble it. You can easily insert your items into the tube thanks to its triangle shape. When shipping, just seal it up and you're good to go. Make sure to note that the sizes provided are the inside usable dimensions. As for maintenance, keep them in a dry place to prevent the corrugated material from getting wet and losing its strength. If they get dirty, you can gently wipe them with a dry cloth.