METAL BACK BOX Flush SINGLE DOUBLE Gang Dual Switch Socket 16mm 25mm 35mm 47mm

STEEL KNOCKOUT BOXES. 1 Gang 16mm. 1 Gang 47mm. 1 Gang 25mm. They are to be fitted into a wall cavity to allow the switch, socket or other accessory to fit flush with the wall. There is a range of different depths available for increase the flexibility of the installation.

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