4" x 4" x 72" Telescoping Inner Boxes

This telescoping inner box measures 4 x 4 x 72 inches interior and is constructed from ECT-32 single wall kraft corrugated with a full overlap (FOL) bottom. The FOL base distributes load weight across the full footprint of the box, providing reinforced stacking strength suited to long, heavy, or dense contents. The inner box slides into the matching outer shell to create a depth-adjustable two-piece shipping set.

The telescoping format is particularly effective for fishing rods, curtain rods, banner stands, architectural trim, rolled textiles, and industrial tubing — any elongated product that exceeds the practical range of standard fixed-depth corrugated. Common users include e-commerce retailers, sporting goods distributors, building materials suppliers, and contract manufacturers shipping custom-length components.

Each bundle contains 25 inner boxes. The outer shell component is sold separately (T4472OUTER) and must be ordered in matching quantities to complete each set. Ships via parcel carrier.