Step 1
The holes for the wires : Take a mark 1.5cm from the side (outside of the box) and 3cm from the bottom. Drill a 4mm hole, straight towards the inside. Second hole : same distance from the side, but through the frame.
Repeat on the other side.
The holes for the wires : Take a mark 1.5cm from the side (outside of the box) and 3cm from the bottom. Drill a 4mm hole, straight towards the inside. Second hole : same distance from the side, but through the frame.
Repeat on the other side.