https://www.boxesofhouston.com/shop/22smt-040425white-4x4x25-square-mailing-tubes-white-50-700-804
4X4X25 SQUARE MAILING TUBES WHITE 50/700 | Boxes of Houston
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https://www.dotsys.com/Shop/PM5543-C475.aspx
5 x 5 x 43" White Square Mailing Tubes
White Square Mailing Tubes, Square tubes will not roll around which makes them easier to pack and ship than traditional round mailing tubes.
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https://www.shippingsupplies.net/Shop/PM5537-C475.aspx
5 x 5 x 37" White Square Mailing Tubes
White Square Mailing Tubes, Square tubes will not roll around which makes them easier to pack and ship than traditional round mailing tubes.
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