"TomD" wrote in message
oups.com...
I have recently completed finishing my unfinished attic (almost). The
attic had plaster walls and a wood floor installed, which seemed to me
that they builder had intentions of finishing it. The house was built
in 1850. There are also two pipes for a radiator run into the attic
(cut through a shaped plank for that radiator to sit on). I want to
start looking for a salvaged radiator but I want to make sure that I
get the correct size. The pipes are about 43" apart. Most of the
radiators that I see online are measured in height, not width. Any
help in selecting a radiator would be greatl appreciated.

To get the correct size, you need to know how much heat you need. Here is a
good place to start
http://www.colonialsupply.com/resources/radiator.htm

As long as the radiator fits between the pipes it is easy enough to plumb.
If it does not, it can still be plumbed, just takes more time and elbows.