I'll be using what I call PVC pipe clamps that can be attatched anywhere really and then the pipe is pressed into them and it snaps onto the pipe more or less. Best part you can rotate the PVC after its clamped in but there is friction to prevent it from flopping around. I figure a total of 4 would be perfect. It would also alow fairly quick removal of the box all together if needed. My light setup has a similar hinge