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Air duct size

Posted by Jim on December 21st, 1999 06:47 PM
In reply to Furnace room ventilation by Franz on December 3rd, 1999 02:43 PM [Go to top of thread]

Yes,your furnace should have it's own personal
cold air return.
When we had our furnace installed, I enclosed
it with drywall,& with out the cold air return
the furnace had a bad vibration,just use 5 inch
flexible duct& run it from the furnace alongthe floor up the
wall & outside with a screened dryer vent to keep
bugs & rodents out.

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