Quote Originally Posted by Rusty Trichome
I don't see why not, but a 'cleaner looking' solution may be 2" grey PVC. (ending in a 4" to 2" reducer 'T') Just a thought. Shouldn't be a need to glue it together, as it slides together pretty tight.
But, as long as you do something that works, then go for it. :thumbsup:

If doors aren't weather-stripped, air will come thru there, inherently adding to the intake volume. (it'll leak air in, which is ok as long as the light doesn't follow, lol)
So you are suggesting something like my diagram below, or just have it come in and end with the opening? Also, doors are not weather stripped (they can be, i suppose), would you suggest leaving them undone? Do I want to share air (intake and out going?) between the bud and the veg rooms?

As far as outgoing air, repeat same process as intake but with fans? Pardon for my ignorance, but im not seeing what you are talking about. I have my father in law coming this afternoon with the tool to cut holes in this plastic, so i'm trying to figure this out on the fly