Super-tough, water-repellent, reinforced 1/8" thick poly-coated fiberboard walls make these tubes ideal for safe storage or mailing of blueprints, drawings, documents, etc. Tubes are cover wrapped with flat black finish. Nickel-plated metal screw caps, sealed metal bottoms. 31/8" inside diameter.

Dimensions: BOX 38 X 14.75 X 11.5 inches