
Folding Carton
1-2-3 Bottom (Lock Bottom)
The 1-2-3 Bottom gets its name from the three-step assembly: fold the main bottom panel, fold the two dust flaps, then snap the locking panel into the slot. The result is an interlocking base that holds firm without glue or tape. The top closure is a standard tuck flap. It's cut from a single sheet of paperboard, typically 14pt to 28pt SBS or C1S.
This style fills the gap between a basic tuck end and a pre-glued auto-lock bottom.
