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10-09-2010, 10:30 PM #2Senior Member
Light venting fan size
are your lights air cooled? the more exhaust the better. best case scenario, you want to be able to exchange the air in your room once every 1-2 minutes, but once ever 5 will suffice.
to figure out your cubic footage multiply length x width x height. the fans you are looking at are rated in CFMs or Cubic Feet per Minute. you do the math.
the two tens will be better than one 12.
-shake
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