18 x 12 x 3" Flat Corrugated Boxes

These 18 x 12 x 3 inch corrugated boxes are built from ECT-32 single wall kraft corrugated board, delivering reliable stacking strength and puncture resistance in a shallow, flat-profile form factor. The 3 inch interior depth paired with an 18 x 12 inch footprint creates a stable, low-profile carton suited to contents that require surface area without height.

The shallow depth makes these boxes a practical choice for e-commerce apparel shipments, retail display inserts, printed materials, document mailers, framed artwork, and electronics accessories. Fulfillment centers and distribution operations handling lightweight, flat goods rely on this footprint to keep pack-out consistent and box selection simple.

Each box ships flat for compact storage at high-volume pack stations. At approximately 0.67 lbs, the boxes add minimal weight to outbound shipments. Bundles of 25 allow for straightforward inventory management in facilities with steady.