I got the above basic idea from seeing this on line...tried contacting the company but got no response (web sight is dated 2014).........seemed to be the right answer to this particular problem.....
Tried to isolate image from ad with NG results.......
Even with vents in the top, that one mounts very close to the top of the system. Any of these would work best if they did not direct air downward to be drawn back into the system.
Found they have a YouTube video - funny actually: