quick question about those, I am setting up a cabinet style setup inside and armoire, and I was looking at a GrowBright 4" Inline Fan & Elf Carbon Filter Combo.. I was wondering can I just mount that inside the cabinet and it will suck the air into the filter that way I don't have to run any ventilation outside the cabinet and or out the window.. That may look suspicous and because I pretty much can't I live in an apartment complex..

The armoire area is 3 foot wide 2 foot deep and 5 foot tall.. I want to have at least 6 plants in a hydro home made 5 gallon setup and then I also have a seperate veg and clone area about the same size, so basically I have to vent a 6x2x5 area will a 4in do it or should I step up to a 6 in