Hey tokr,

The exhaust is basically a 4 inch vent cut with a hole saw and a 4 inch muffin fan mounted on the outside of the cabinet. Air intake is accomplished by creating a false floor 3-4 inches high that draws in fresh air from the back of the cabinet. In essence I pulled the backing board away from the bottom 2 inches of the wardrobe, making a light baffle to keep light from leaking into the grow area.

Hope that makes sense. I'll see if I can snap a few photos and post up so you can see what it looks like... :tin foil hat: :tin foil hat: