I recently purchased a Vortex 6" Inline Fan. I'm debating on drilling a 6" outlet vent or adding a reducer and bumping it down to 4". The 4" is a bit safer since I'll be going through cinder block. Better structural integrity. Anyone have any input?
BudzAndSudz said:Well Vortex is a brand name, so a quick search on google turns up an advertised 449CFM, but of course after ducting and various twists and turns on the outlet you can probably expect about 350-400CFM.
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