Custom Lock Bottom Tuck Top Boxes

These custom lock bottom tuck top boxes have four flaps that interlock at the base. A U-shaped flap folds first, then two smaller dust flaps follow. A final locking panel tucks into the U-shaped flap to close. This 1-2-3 folding method takes three simple steps. The top closes with a standard tuck-in flap for a clean finish. Some styles use an auto-bottom that locks when squeezed inward. The interlocking base adds strength for carrying heavier items. These boxes ship flat and assemble easily by hand or machine. The locked bottom resists accidental opening during handling and transport.