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Posted by HeatPro on September 18, 2008 at 15:13:41:
In Reply to: Weil-McLain EG-45 or EG-40 posted by John on September 18, 2008 at 14:30:12:
Without an accurate heat estimate, you question is similar to:
"How many feathers are in a box?"
http://www.heatpro.us/heatproidx.htm
http://www.heatpro.us/duct/squareft.htm