BG Electrical 817 1 Gang 10mm Square Spacer

Did its job. Make sure your securing screws are long enough to engage in back box.

I'm fitting some smart light switches to electrical back boxes that are not quite deep enough. These easy to fit spacers provide the extra space I need.

Does the job of giving you more room for wiring if you have a shallow back box. I used this to provide more space so that I could install a smart switch, which tend to extend deeper behind the switch than a non-smart switch. I only needed 10mm and the options were limited. It does the job but be aware that (a) it has rounded corners and (b) it is slightly off white. Consequently my switch + spacer + surround are all slightly different, but this spacer is the most noticeably off-white of the the three (hence the 4 stars).

Excellent spacer great quality

Perfect fit for a smart light switch which had too much electronic gubbins to fit onto the existing pattress. We were fortunate that the rounded corners were an exact match for the switch, otherwise it might have looked odd. Good cheap solution.

I bought this thinking it was grey !!! - didnt read the small print as it arrived white ! ... no point sending it back so will use as and when ... maybe they should have been designed that they could be multi stacked so one can use 2 or 3 to pack the switch out to enable the cables to fit behind or offer different depths 10/15/20 mm but a good altn that smashing the wall deeper and buying a 35mm insert.

Works well

Well made, and enabled me to fit a Wi-Fi small light switch to and existing wall socket.