trying to work out before i go ahead with it. so the space is 14' x 11' i will be using 9' x 10 ' of that for lighting 8 600's and 1 1000 in a square shape with the 1000 in the center. x x x x X x x x x i am trying to figure out the ducting i have a 12" high velocity can fan that i have hooked up to a window box so what is the best way to split the 12" into 3 chains of lights? This would bring fresh air into the hoods and then out of the roof. all hoods are 6". i havent cut any holes in the roof yet just built the window box prob will add another intake on the window box for the room itself and setup a exhuast for the room separate than the lights