Flush Steel Metal Back Box - Single Gang Switch Socket 

- Knockout box with earth terminal & adjustable fixing lug

- Suitable for use with flush mounted accessories

- Manufactured from galvanised steel

- Includes knockouts for ease of wiring

Dimensions;

25mm: 68.3mm x 68.3mm x 25mm

35mm: 68.3mm x 68.3mm x 35mm

47mm: 68.3mm x 68.3mm x 47mm