RichR Posted March 22, 2010 Report Share Posted March 22, 2010 The supply plenum extends at least 6" on either side of the heating unit cabinet to accommodate a higher efficient Click to Enlarge 39.14 KB a-coil. I don't see how the airflow will move across the entire coil. Is there a limit or ratio between the two? Quote Link to comment Share on other sites More sharing options...
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