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Old 2014-02-03, 6:52pm
Alaska Alaska is offline
Alaska Boro
 
Join Date: Dec 10, 2009
Location: Anchorage, Alaska
Posts: 1,065
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The clean air supply and the exhaust must also be separated. That could be different in various parts of the world. Generally 3 meters if within your local buildings codes regulations. More is often better!

Many folks use 750 CFM fans with duct work that is 25 cm to 30 cm in OD. IMO 15 cm is too small.

Last edited by Alaska; 2014-02-03 at 10:12pm.
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