The Knightsbridge ST2164 4 Gang Double Plate Dimmer Switch is supplied in a brilliant white finish and offers exceptional quality and value. This 40-400 watt 2 way switch has a push on/off action and is constructed from a durable, scratch-resistant thermoset plastic material. 1 x 40-400 Watt, 4 Gang, 2 way Dimmer Switch, Standard Electric Wall Plate Switch. Durable, scratch-resistant thermoset plastic material. Its measurements are Width 146mm x Height 85mm x Depth 9mm and comes complete with fixing screws and screw caps. Complies to all relevant safety standards and comes with a 15 year manufacturer guarantee and CE marked. Some other products that go perfectly with the socket: 2G 25mm Galvanised Steel Box.