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5" ducts?

Posted by JT on March 19th, 1998 07:46 PM
In reply to INSTALL FORCED AIR FURNACE AND DUCTS "2" by MAC on March 16th, 1998 08:11 PM [Go to top of thread]

Mac, offhand I'd say you goofed somewere in your
calculations. If you want to do it right, go to, and order a copy of Manual D. You
might also want to order Manual J for heat load
calculations since there is much more to be
condidered than just floor area.

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