One assembly option that is very common with power switches is panel mounting. There are four main types of termination with a panel mount switch: quick connect, screw, socket and solder lug terminations. The typical panel thickness is a range between 1.5mm and 4mm. Some standard rectangular panel cutout sizes in millimeters are 11 x 30, 13 x 19, 22 x 30. Some standard circular panel cutout sizes in millimeters are 16, 20, 22, and 25mm in diameter.