18 x 18 x 6" Flat Corrugated Boxes

These 18 x 18 x 6 inch corrugated boxes deliver a wide, shallow interior that sets them apart from standard cubic cartons. The broad interior footprint creates a natural fit for items that spread horizontally rather than stack vertically, eliminating the excess void fill that oversized boxes require.

Flat or low-profile goods benefit most from this format — framed artwork, mirrors, tile samples, folded apparel, and similar retail or e-commerce merchandise ship cleanly without shifting. Distribution centers, fulfillment operations, and manufacturing shipping departments frequently keep this size on hand for products that would be difficult to center and protect in deeper cartons.

Each box is built from ECT-32 single wall kraft corrugated and weighs approximately 1.30 lbs. Boxes arrive flat-packed and are sold in bundles of 20, keeping storage footprint compact between orders.