It looks like that mounting bar might even bolt quite nicely into the box anyway! It has slots that allow you to adjust the position of the screws horizontally along the bar.
Just fit it diagnolly across the box and the fitting's base will cover the entire thing!

Failing that I guess you'll have to make a plate.


This is the current French system: (rated 6A 230V 50Hz)
(flush fitted box with socket)
[Linked Image from castorama.fr]

With mouting hook:
[Linked Image from castorama.fr]

[Linked Image from castorama.fr]

the plug fits almost flat into the recessed socket. so can fit comfortably behind any fitting.

These are obligatory since October 1st, 2001 in all new houses/apartments in France.
Under NF C 15_100

Cenelec should pick a system and force harmonisation across europe though as then we could require light manufacturers to provide compatable fittings!
Where a plug/socket system wasn't fitted a small trailing socket could still be installed behind the fitting and pushed into the hole above in the ceiling!

The French system is a lot neater than the "klik" lighting sockets used in the UK and is almost completely flat on the ceiling even with a plug inserted due to the recessed socket.



[This message has been edited by djk (edited 02-04-2005).]