Quote Originally Posted by bejay
a screen will keep the bugs out but any intake to the room will move some air if you do not have an intake now you are probably not moving as much air through your lights as you could be.
Right now, I just am pushing the air into the attic and it's being sucked out of the room by an open circuit... no closed circuit at all. The air is then replaced from outside the room and a small amount from the hole in the flooring.

If the 600 watt is in a straight line as my other lights, then alls I need is duct connected to that hole in the flooring, correct?

I was under the impression you needed to not only suck air from outside, but also need to suck air out of the room. Can anyone elaborate a bit more?