The Full-Overlap Sealed Carton — Overlapping Flaps at Both Ends for Maximum Strength

The full-overlap sealed carton is the strongest, most enclosed box in the overlap family, because it closes the same way at both ends: full-overlap flaps top and bottom, where all four flaps lap over each other so every face doubles up on board. That symmetry is quietly useful on the packing line — both ends are identical, so there's no "this way up," no wrong end, and either can be the base, which makes assembly foolproof for casual or seasonal packers. Sealed with tape or glue at each end, it wraps the product in doubled board all round for the best protection of any carton here, so it's the pick for heavier, shippable, or knock-prone goods — hardware, glassware and bottles, tools, spare parts, and anything that has to survive a courier rather than just sit on a shelf. The honest trade-off is that sealing two overlap ends takes a moment longer than a single tuck, and it uses a little more board, so it's overkill for light retail: if you want the same strong base but a quicker, cleaner top, the covered-top overlap carton gives you a single covering flap up top, and the overlap-bottom tuck box swaps the top for an easy tuck. One thing to set right when you generate it: full-overlap flaps meet and lap across the full panel, so they're sensitive to material thickness — enter your caliper accurately, or the flaps gap on thin board or fight each other and bow the box on thick board. Then set your length, width, and height, and PackMyMan lays both overlap closures out cleanly for your board, exporting a production-ready dieline in SVG, DXF, or PDF.