18 x 18 x 4" Flat Corrugated Boxes

These 18 x 18 x 4 inch corrugated boxes are a purpose-built solution for flat and low-profile shipments, constructed from ECT-32 single wall kraft corrugated board. The C-flute construction delivers reliable stacking strength and puncture resistance, keeping contents protected through standard parcel handling.

The shallow 4 inch depth is well matched to applications where minimizing void fill and controlling dimensional weight are operational priorities. E-commerce fulfillment centers, retail distributors, and manufacturing operations shipping flat goods — printed materials, framed artwork, tiles, clothing, and similar products — benefit from the square 18 x 18 inch footprint, which reduces excess packaging material around similarly shaped items.

Boxes ship and store flat, keeping warehouse space requirements low until cartons are needed at the pack station. Each bundle contains 25 boxes, and the product is parcel-friendly, supporting flexible reorder quantities for facilities at any volume level.