On 16/02/2021 17:24, Steve Walker wrote:
On 16/02/2021 16:36, Chris Green wrote:
I have an old blanked off double socket box that I'd like to fit an
FCU into, is there any way to do this?Â* It's a cemented in double
metal box so is pretty much immovable without destroying things
somewhat.

MK Grid Switch range?

https://tinyurl.com/14qcx2v8


No mention of an FCU module in that link and some of the
inserts say "requires a 25mm backbox".