Hello,

Why is it that metal back boxes come in 25mm, 35mm, and 47mm sizes but
surface mount pattress boxes only come in 25mm and 47mm sizes?

I would like to wire a spur and I wasn't sure that a 25mm box would
give me enough room for the cables; a 35mm box would have been better.
Will a 25mm box be a tight fit?

I see Toolstation sell 32mm boxes but they are the same size as
Wickes' 25mm boxes so perhaps one measures internal depth and the
other external depth?

Thanks,
Stephen.

Stephen wrote:

Why is it that metal back boxes come in 25mm, 35mm, and 47mm sizes but
surface mount pattress boxes only come in 25mm and 47mm sizes?

search and ye shall find

http://www.alertelectrical.com/Wirin...Box-CMA083.asp

On Thu, 04 Dec 2008 10:37:00 +0000, Andy Burns
wrote:

search and ye shall find

http://www.alertelectrical.com/Wirin...Box-CMA083.asp

Thanks. I wonder whether it is 35mm deep internally or whether it is
an external measurement as I found with Toolstation?

Stephen wrote:
On Thu, 04 Dec 2008 10:37:00 +0000, Andy Burns
wrote:

search and ye shall find

http://www.alertelectrical.com/Wirin...Box-CMA083.asp

Thanks. I wonder whether it is 35mm deep internally or whether it is
an external measurement as I found with Toolstation?

I've only ever seen external depth quoted. There is much more choice
about than just 2 depths.


NT

"Andy Burns" wrote in message
...
Stephen wrote:

Why is it that metal back boxes come in 25mm, 35mm, and 47mm sizes but
surface mount pattress boxes only come in 25mm and 47mm sizes?

search and ye shall find


http://www.alertelectrical.com/Wirin...Box-CMA083.asp

You also have more choice at
http://www.electricalshop.net/acatal...ttresses_.html so you're
not stuck for depth.