CFM rating on vent
I'm installing a half round roof dormer vent. The opening is 24" x 12" and nets 100 sq in.
I want to know the CFM rating. It'll be used to exhaust a 18~24K BTU air conditioner, I don't know the CFM output of the AC yet, but need to know if this vent will be enuff.
I've seen where 400 CFM / ton (12K BTU) is standard, but I don't know if that's exhaust or cold output fan.
Basically the AC will vent it's hot air directly out this vent.
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