Single 1 Gang Galvanised Metal Back Box 47mm Deep Flush Mount Pattress Box - Pack of 1

not bad at all does the job

It's OK but it is fairly flimsy and mine arrived without a screw in the earth continuity receptacle and was rendered useless until I could find another screw. The problem is that it was not in any packaging so the screw could have fallen out anywhere in transit. Cheap for a reason.

Disliked chiselling the wall out to accommodate.