Quote Originally Posted by lampost
Huh, so you have a 6-inch fan exhausting through a 4-inch port? So you have a reducer and such?
Yes. Using a plastic pipe reducer, fits nicely to the fan itself.

Quote Originally Posted by lampost
I didn't realize the rectangular areas at the bottom were ports. Can you typically leave those open without light intruding? How do they pull that off?
No such luck. Mine are just a simple screen with the velcro around to seal the cover. You'll need to fabricate some sort of shield/baffle to exclude light, if you'll be doing this in a well-lit room.

Quote Originally Posted by lampost
Well, I'm finally going to make it to the hydro store Saturday so that should answer a lot of my remaining questions. One thing though... where/how do you attach the fans? I'm not experienced with HVAC stuff, so I'm just curious how you mount them. Edge of reflector? Edge of grow tent? Middle of duct?
Edge of reflector works well.
I've got mine hung in the back corner, right @ the exhaust port. everything's hanging from the cross-members in the tent. (pic)

The tent came with a couple velcro straps. I didn't know what they were for, at the time, but I reckon they're for hangin' stuff. :i feel stupid:

The hydro store will probably have a couple different set ups to look at when you go. I hate going to the hydro shop. I always end up spending 10X what I'm planning.

Good luck.