THIS ABILITYONE ITEM IS EQUIVALENT TO THE FOLLOWING MODELS: ULINE S12100 ULINE S12101 ULINE S12102. Mailing Tube 39 x 4 Untreated chipboard mailing tube is ideal for the shipment and storage of maps, blueprints and drawings. Meets strict government requirements for crush resistance. Tube has tight fitting, slip over telescoping covers with metal ends and spiralwound construction. Contains 99% postconsumer recovered materials. 24 tubes per box. Thick, strong tubes for heavyduty shipping jobs Adjustable length saves storage space End caps are preattached tube loads and seals from the middle Joint cap seals easily with tape or shipping label SDS SHEETS: Yes. ENVIRONMENTAL SUSTAINABILITY (GREEN) INFO: Recyclable: Yes. PreConsumer Recycled Content: 0