Triangle Mailing Tubes, 18.25x3x3 inch Shipping Box, 50-Pack 18' Cardboard Poster Tube for Blueprints, Artwork, Crafts, Long Art Holder, Bulk, White

TRIANGULAR DESIGN: Distinctive triangle-shaped corrugated cardboard tubes deliver excellent strength and stability for securely shipping and storing long, flat items. GENEROUS DIMENSIONS: Each tube is 18.25 inches long with 3-inch sides, providing generous space for posters, blueprints, artwork, documents, and other elongated materials. BULK VALUE PACK: Contains 50 white mailing tubes per pack, ideal for high-volume shipping needs, FBA sellers, warehouses, art studios, and businesses requiring consistent packaging supplies. DURABLE CONSTRUCTION: Crafted from robust corrugated cardboard material that safeguards contents from bending, crushing, and damage during transit and storage. VERSATILE APPLICATIONS: Perfect for shipping artwork, architectural blueprints, engineering drawings, posters, prints, maps, and other long items needing protective packaging. EASY TO USE: Features quick and convenient folding assembly; a demonstration video is available on the product page for detailed steps, making it simple to master even for first-time users. SPACE-EFFICIENT STORAGE: The flat sides stop rolling and enable efficient stacking and organization in warehouses, storage rooms, and shipping areas