Custom build switches with this flexible system. Select a faceplate and gridplate(s) to suit. Choose any combination of grid modules and simply clip them into the gridplate. Finally, screw on the faceplate. Features: Create Your Own Switch Combinations; Low Profile Design Coordinates with Varilight Screwless Range; Amber RedIndicator Module; Use with Any Faceplate & Grid Substrate. Specifications: Back box depth 25mm.