The Powermaster dry lining box is designed to accommodate one electrical device, such as a switch or socket. Its 35mm depth makes it suitable for various applications. This dry lining box is installed by cutting a hole in the wall and then inserting the box into the hole. It is secured in place using screws or clips attached to the back of the box and fastened to the wall. Dry lining boxes are commonly used in residential and commercial construction to conceal electrical wiring and devices within walls for a cleaner and more streamlined appearance.