18 x 16 x 4" Flat Corrugated Boxes

These 18 x 16 x 4 inch corrugated boxes are constructed from ECT-32 single wall kraft corrugated board, delivering reliable stacking strength and puncture resistance in a shallow, low-profile format. The 4 inch depth minimizes void fill requirements and helps control dimensional weight charges in high-volume shipping environments.

The shallow footprint makes these boxes a natural fit for apparel, framed prints, documents, electronics accessories, and other flat or low-profile goods. E-commerce fulfillment centers, retail distributors, and manufacturing facilities commonly rely on this size to handle a consistent range of SKUs without switching carton formats.

Each bundle contains 25 boxes that ship flat. The ECT-32 construction meets standard carrier performance requirements for ground and parcel shipments.