Appleby SB678 1 Gang 16mm Deep Flush Steel Extension Back Box\r\n- The extension box is a single gang 16mm deep that is suitable for 1 gang of electrical accessories to set up.- This is made from high-quality galvanized metal to ensure a safe and durable connection.- It is required for the mounting box to hide the modules within a wall cavity.- Commonly used for in-wall mounting, which allows for all the wiring to be neatly hidden away.- This box can be used for home or commercial.\r\nThe Appleby SB678 1 Gang 16mm Deep Flush Steel Extension Back Box is designed for in-wall mounting, which allows for all the wiring to be neatly hidden away. It is made of galvanized steel and is durable. Generally, it is used for mounting electronic accessories on walls. The extension box is enough knockouts for perfect fitting with electrical accessories. \r\nFeatures:\r\n- Durable, visually pleasing.- Brass pillar earth.- Dimensions: (H)70 mm x (W)70 mm x (D)16 mm.- Type: 1 Gang.- Depth: 16mm.- Material: Steel.- Colour: Silver.- Type: Steel Box Extension.- Application: Extension Back Box.- Brand: Appleby.