Control panel for enclosures from IKEA Lack table suitable for Expandable Steel Sheet Holder.
Rocker switches with the dimensions 15 x 10mm can be inserted into the openings on the left.
The frames are glued into the two recesses. This results in a certain protection against unintentional actuation.
Update:
I had to adjust the cutouts for the rocker switches. That was a design flaw on my part. The switches fell through the hole. With version 2 the switches now fit.
The author hasn't provided the model origin yet.