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These one-piece square mailing tubes are designed to form a safe, stable shape around your artwork, posters or documents. Tubes are made of 200 lb. test white corrugated cardboard. Boxes are ideal for shipping, stacking, and storing horizontally or vertically.
Tubes arrive flat and require easy assembly. Simply fold panels to create a square tube and use tape to secure the sides and ends as needed.
Made with 30-40% recycled kraft cardboard.