4 x 36" White Tubes with Caps. Attractive White Tubes are great for storing or shipping posters, blueprints etc. 3-ply, spiral wound construction for strength. White end caps (included) snap into place to hold contents secure. Caps will not pop off during shipment. Tubes are reusable and recyclable. Sizes listed are usable space. Actual tube lengths are longer. MTCAP4 Additional 4" End Caps sold separately.