Just give them the options. Chop the wall out or get a different switch. It aint your problem.  

I had similar this week where customer has just had a new kitchen fitted, all decorated out then wanted those bleedin awful screwless flatplate sockets fitted.2 had USB points on as well. Absolutely no chance of fitting them in 25mm back boxes, especially as it wasn't going to be tiled either.

Gary

aligarjon said:

especially as it wasn't going to be tiled either

Have you just been round to my daughter's house?

So folks, why not put in 35 mm boxes as a matter of course?

well I tend to, and I suspect others too,  but of course its not my decision what is already there, and there are cases where the wall will not stand it.

Mike

Too much work!

Z.

Doesn't anyone use the square spacer frames/standoffs then? As illustrated. It allowed me to fit the deep backed dimmer switch.

Z.

Doesn't anyone use the square spacer frames/standoffs then? As illustrated. It allowed me to fit the deep backed dimmer switch.

Z.