i'm taking this plan and putting together a PVC frame to hold a total of 4 of these pieces, as you describe it 3 bulbs each. planning to use it in my grow cab for my next grow, just take out the shelf and use the dowel pins to hang the PVC frame, think it will be perfect for my first soil and my first SCRoG grow.
i think those are the trifecta, as i've been dialing everything in from my experience... CFL, SCRoG, Soil is the way to go.
the CFL can get super close, the screen is level in height so you get even exposure from the nearly cool cfl, and soil has a slow but steady growth rate which is perfect for CFL given its not a truly high intensity output.
those are my thoughts... maybe not the time or place, haha.. but thats what i'm talkin' bout.
Shack