I put it on the floor because I had to add some more stuff to the top and the hose wouldn't reach. It was an experiment that worked out.
All you need is:
1/2 inch PVC Sleeve (non threaded)
(2) 1/2 in 90 degree elbows
Lengths of 1/2 inch PVC pipe, cut to length you need
I am going to shorten it a bit and add a branch to split the output to a couple spots in the cage. But for now, I just attached the hose that came with the fogger and angled it where I needed it. it just fits right over the PVC pipe.