3 x 3 x 18 Square White Corrugated Mailing Tube 25/Bundle Discount_5933550108762_20 Dividers offer additional flexibility

Dividers offer additional flexibility

1 1/2" polystyrene foam

Insulates non-flat surfaces such as fittings and valves

All styles are appoved for shipment of your product using Post Office (USPS)

Use with refrigerants such as Cold Packs

3 x 3 x 18 Square White Corrugated Mailing Tube 25/Bundle Discount_5933550108762_20 Dividers offer additional flexibilityThese mailing tubes have a square shape for easy inserting and removal. Square mailing tubes ship flat and take up less space. They will rest on flat surfaces without rolling off and are easily stackable. Square mailers ship flat and take up less space. They will rest on flat surfaces without rolling off and are easily stackable.