Just a follow-up, since I ran across this article just moments ago: http://www.poultryventilation.com/sites/default/files/tips/2011/vol23n2.pdf
In this particular case they're talking about the benefits of a radiant heating system for poultry and the assumption in this case is *ceiling-based*...
There's a lot in your post that you don't say. Is this an electric radiant heat system, or hydronic (hot water)? It sounds like it's an electric system.
Assuming it's an electric system, how did you end up with "extra"? Is this an extra spool or mat that is complete as if it was from the...