40 x 8 x 50" Side Loading Boxes

These 40 x 8 x 50 inch side-loading corrugated boxes are engineered for oversized, flat, or elongated items that require horizontal insertion. Built from ECT-44 single-wall corrugated board with full overlapping flaps, they deliver the structural rigidity that standard single-wall cartons cannot provide for dimensional or heavy loads.

The side-loading configuration makes these boxes a practical choice for manufacturers, distributors, and fulfillment operations handling framed artwork, architectural prints, flat panels, documents, banners, or long rigid goods. Industries such as printing, building materials, and trade show supply commonly rely on this format to protect fragile or hard-to-package flat merchandise.

Each box weighs approximately 3.92 lbs and ships and stores flat to minimize warehouse footprint. Sold in bundles of 5. Due to their dimensions, these cartons require freight delivery.