Looks like a cab that I have been working on myself, but I added a mother/clone room on the bottom. Im set on the 250w so I can upgrade in the future. To deal with the heat problem I sectioned off the top with a sheet of glass between the light and the grow space. One fan blowing in and one sucking out. The fans that I plan on using have different speeds so I might need to play around to see what works. For a filter Im going to use a 28 cfm squirrel cage fan maybe two, sucking the sweet stink through the filter out of the grow chamber,passive intake holes will be drilled in the floor of the grow room and the bottom of the clone room. Alowing fresh air to be sucked through the two chambers. Heres a pic of mine..Im not looking for huge plants so I think it will work.