FEFCO 0203 Full overlap slotted container
A slotted container whose outer flaps are the box's full width
At its own sizes
Open it in ParametrIQ CAD
It comes with ParametrIQ CAD: File › Run Parametric… › Packaging › FEFCO 0203 Full overlap slotted container. Or download its drawing file (.piq) and open it in CAD.