48 1/2 x 6 1/2 x 38" Heavy-Duty Telescoping Outer Boxes

This 48 1/2 x 6 1/2 x 38 inch telescoping outer box is the sliding cover half of a two-piece corrugated set, manufactured from ECT-44 kraft corrugated board — a heavy-duty rating that surpasses the ECT-32 standard. The full overlap (FOL) bottom construction distributes load weight across the entire base, resisting blowout and improving stack stability in long, narrow carton profiles.

Telescoping box sets are the preferred solution for items that resist standard carton sizing: framed artwork, architectural prints, molding and trim lengths, sporting equipment, and industrial components with unusual aspect ratios. The outer box slides over the inner carton to create a secure, adjustable enclosure without requiring custom tooling or special packaging equipment.

This listing covers the outer box only; the matching inner box (T48638INHD) is sold separately and is required to complete the telescoping assembly. The flute designation for this product is C-flute single-wall construction at the ECT-44 rating. Bundles contain 10 outer boxes, and the cartons ship via parcel carrier.