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Stock #: CP-030318SMT
These 3" x 3" x 18" Square Mailing Tubes do not roll around making them better for packaging and shipping than traditional round mailing tubes. Great to use for posters, charts, maps, blueprints, artwork and other documents. These 3 x 3 x 18 Square Mailing Tubes are 3 inches by 3 inches squared and 18 inches long, and they can be reused and recycled. One piece Square Mailing Tubes ship flat to save space and fold together without tape or glue. Constructed from 200#/ECT-32-B oyster white corrugated, 25 per case.