37 x 4 x 30" Telescoping Inner Boxes (Bundle of 10)

• Dimensions: 37" x 4" x 30"
• Material: ECT-32 single wall kraft corrugated
• Quantity: 10 boxes per bundle
• Weight: Approximately 1.915 lbs per box
• Shipping: Ships via parcel

This telescoping inner box measures 37 x 4 x 30 inches interior and is built from ECT-32 kraft corrugated with a full overlap (FOL) bottom. The FOL construction distributes load across the base more evenly than a standard RSC bottom, adding meaningful stacking resistance when boxes are palletized or staged in high-cube storage.

The two-piece telescoping format is well suited to long, flat, or variable-height items — common in print and framing distribution, architectural supply, retail fixtures, and industrial parts fulfillment. By adjusting how far the outer sleeve overlaps the inner tray, packers can fit a range of product heights from a single box configuration, reducing the number of distinct SKUs required in a pick-and-pack operation.

This listing covers the inner box only; one inner and one outer carton together complete a functional telescoping set. The matching outer box (T37430OUTER) is sold separately. Each bundle contains 10 inner boxes and ships via parcel carrier.