BOX USA BT202040INNER Telescoping Inner Boxes, 20"L x 20"W x 40"H, Kraft (Pack of 10) One inner and one outer carton required to make a set - sold separately Combine with T202040OUTER to complete the set Manufactured from 200#/ECT-32 Kraft corrugated Cartons have a F.O.L. (full over lap) bottom for added strength Sold and shipped flat in bundle quantities