Max Knobloch Wall Pass-through letterbox system with function keys Express Box MD11-OR-E stainless steel (12 liters)
The 4 screws that secure the front panel, are known. Safety screws. A bit or key was not in the box. 30 should cost the. At the hardware store, I found him to be 1.50. When connecting the wires to the doorbell broke already equal to the screw head of