18 x 16 x 4" Flat Corrugated Boxes -25 per Bundle

These 18 x 16 x 4 in kraft brown corrugated shipping boxes are a reliable everyday choice for packing and shipping small items. Built for E1 Packaging customers who need consistent quality, predictable strength, and packaging that flows smoothly through pick, pack, and ship operations. Each box is manufactured to a 32 ECT board grade for dependable stacking strength in storage and transit. Boxes ship flat to save space in your warehouse and assemble quickly with standard packing tape. For bulk users, manufacturer packaging is 25 boxes per bundle and 500 boxes per bale. Use them for e‑commerce orders, subscription boxes, fulfillment programs, or everyday shipping where a sturdy corrugated carton is required.