ive seen the brass ones, its odd that you seem to be able to get them in brass but not in chrome - ive looked everywhere.
looked at the mk grid system as well but this alas wont work. whilst the frames fit into a standard double backbox its not actually a standard double that im trying to fit to. its a 'double single' if that makes sense - ie a box to fit two singles next to eachother so its a bit longer than a standard double. sure that there is a technical name for it but i dont know what it is.
and i am aware of the earth requirement - i have an earth present at the box so should be able to fit any option once ive found it!