14 x 14 x 40" Telescoping Inner Boxes

This 14 x 14 x 40 inch telescoping inner box is the sliding component of a two-piece adjustable-height corrugated set. Built from ECT-32 kraft corrugated with a full overlap (FOL) bottom, it delivers reinforced base support where stacked load and transit stress concentrate most.

The telescoping format is well suited for tall, irregularly shaped, or variable-height items common in e-commerce fulfillment, retail distribution, manufacturing, and trade show logistics — anywhere a fixed-height box would force compromises in fit or void fill. The adjustable configuration reduces the number of distinct box sizes a facility needs to stock for tall-product categories.

This listing covers the inner box only; one inner and one outer carton are required to complete a functional set — the outer carton (T141440OUTER) is sold separately. The FOL bottom spans the full base perimeter for even load distribution. Bundles contain 15 inner boxes and ship via parcel carrier.