It’s a metal box designed to be chased into a wall. So a back box.
it is not made to be surface mounted. A box manufactured for surface mounting is a patress. The image is not a patress.
Tricky question. The box will always be at the “back” of a socket.Is a back box always flush/recessed?
Ok. Can we trust Wikipedia?
it sayeth
A pattress or pattress box or fitting box is the container for the space behind electrical fittings such as power outlet sockets, light switches, or fixed light fixtures. Pattresses may be designed for either surface mounting or for embedding in the wall or skirting board.
Wikipedia
Nice lager. With a slice of lime.. God help us is we tried to Wiki the current C word...
I did a search for about 10 minutes, and mostly all of the sites called everything a 'pat/tress' I've always known all of them as the P word. Just something to make a post and make a conversation...
Looks like one of those things we have all got used to but is not entirely accurate.
You must have seen this site: they have the same carpet as you.
https://www.designingbuildings.co.uk/wiki/Pattress
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