Crome Towel Radiators

[kev999]

Hi,
May seem like a simple question to you lot, but I was not sure.
I wish to change the bathroom radiator with a chrome towel rail radiator.
The current size rad is 400 wide by 600 high.
Is it best to replace the rad with the same size, or could I go a bit higher, maybe 800?
I just thought if I went bigger would it be bad for the system. It is not a combi boler.
Thanks

 

[Bamber gaspipe]

It will be O.K. to go to 800mm high ..I best make that clear.... if you can get the size..