Reverse tuck cartons or product boxes derive their name from the way the ends tuck into the box from opposite (or reverse) directions. These 25ECT Eflute 3 ply reverse tuck gift boxes are stronger than chipboard or SBS product boxes. Our matt finish color paper is made from 100% secondary fibers and is chlorine and acidfree. The uses for U-Pack’s reverse tuck cartons are limitless Internal Dimensions: 34 x 22 x 60 mm (tolerance +/- 1/4″)