On 6 Aug 2009 19:13:28 GMT, YAPH wrote:

suggest you check the article on radiators in the wiki - it has a formula
for working out the output of any standard rad given its sizes and
configuration

But that was my question. If all radiators that are the same height,
same width, and all double finned, why should one make have a higher
output. If they are all constructed the same and obey the same
formula, should all outputs be equal?