3" x 36", White, Mailing Tube, Attractive & 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 & Recyclable, Sizes Listed Are Usable Space, Actual Tube Lengths Are Longer, White With .062 Wall Thickness.