Kick-ass fan setup bro... just for kicks, can you get some close-up picks of the vanes, rotors and such?

In the grow room, are the four ducts in-line fans? Or are they just ducts?

Best,

-turtle420
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turtle420 Reviewed by turtle420 on . Getting There ! 'Just a couple of pics of my room and the ventilation accesories... (No, that's NOT my grow light :)!!!). Rating: 5