These false panels are purely decorative and meant to match the existing cabinet doors for a consistent look, but are not usable doors. Also referred to as a “Decorative Door”.
Fake Door, False Door, and Decorative Door are usually found on base cabinets to keep the pattern of the cabinet row looking consistent. These are purely aesthetic and not functional. These are found in places like kitchen islands where two of the doors are functional, but fake doors between those functional doors make a better appearance, rather than leaving a flat or slab surface.