8x4x4" Heavy‑Duty Long Corrugated Shipping Boxes, 25‑Pack – 200 lb Test Strength, C‑Flute, Durable Mailing & Storage Cartons for Long/Narrow Items, ASTM D5118 Certified
Heavy‑Duty Long Corrugated Shipping Boxes, Perfect for Long, Narrow Items, 200 lb Test Strength Durable, Space‑Saving Design for Moving, Storage & Electronics
Engineered for maximum durability, these 200 lb Test Corrugated Boxes are the ultimate solution for shipping, storage, and handling heavy or oversized items. Crafted from premium C‑flute corrugated cardboard, they deliver exceptional crush resistance and structural integrity—capable of withstanding up to 200 lbs/sq.in. of sidewall pressure.
Whether you’re packaging electronics, apparel, books, or industrial components, these boxes ensure reliable protection while their flat‑fold design minimizes freight and storage costs. Perfect for both commercial and personal use, they combine strength, efficiency, and sustainability.
✅ 200 lb Test Strength – Withstands up to 200 lbs/sq.in. of sidewall pressure for heavy‑duty performance
✅ C‑Flute Construction – Provides superior cushioning and crush resistance
✅ ASTM D5118 Certified – Guarantees consistent quality and durability
✅ Flat Shipping Design – Saves space and reduces freight costs
✅ Eco‑Friendly & Recyclable – Made from sustainable materials for responsible packaging
✅ Glued Seams & Lengthwise Opening – Easy to assemble and load efficiently
✅ Versatile Sizing – Ideal for apparel, picture frames, books, scales, wire spools, electronics, and other long or bulky items
