Intakes for both the veg and flower are 6" ducting that come in from the back of the right side of the veg chamber. They both have fantec backdraft dampers and are painted black inside the ducting. I covered the internal ducting with a box i created from an extra metal shelf from the cabinet. The plasma cutter makes these small project fun, easy and professional looking. I then insulated the cover. The outside of the box where the vents come out of have a household vent thing that is 12"x 6" rectangle. It will be painted the same color as the cab and looks like the ones on the clothes closets use for ventation. That cover will have a filter beneath it to keep the uglies out. Looks discrete! My condo is geting tore up however as I just going around see what this things I can cut with this plasma gun, have to quit with that. lol