We had two cabinets next to each other with a bit of room between them. The idea is to create a shelf between the cabinets. With two M3.5 wood screws these mounts can be attached to the sides of the cabinets. One additional M3.5 wood screw than holds the shelf itself in place.
I printed with 40% cubic infill and used PETG filament.
The author marked this model as their own original creation.