18 x 18 x 12" Heavy-Duty Boxes

These 18 x 18 x 12 inch heavy-duty corrugated boxes are built from ECT-44 single wall kraft corrugated board, delivering approximately 40% greater compression resistance and stacking strength than a standard ECT-32 carton of the same footprint. At just under 2 lbs per box, the reinforced construction adds minimal tare weight relative to the load capacity it supports.

The square 18 x 18 inch base and 12 inch depth suit heavier or denser product loads common in warehousing, e-commerce fulfillment, retail distribution, and light manufacturing — particularly where standard-grade cartons risk crushing under stacked weight or prolonged storage on pallet racking.

Boxes arrive flat in bundles of 25 and are compatible with standard taping, strapping, and pressure-sensitive labeling workflows.