I just got the Economy grow box from homegrown hydroponics. Hooked it up and let it run for a while to check heat issues, etc. Stays relatively cool for 400watts in such a small area. I did have to line the sides with aluminum foil because the orange light escapes through the plastic. Runs kind of loud too with the dual exhaust fans, and I keep it about 8" from the wall. Seems it would work better if the intake fan was on the side instead of the rear. Oh well. I'll take a vow of celibacy for three months until I can pay off my credit card.