QTY 10 was just a number I ran off in my head - recalling I removed about 6 on the front of it, and there was 2 on each side where it was missing (the side that connects to the duct). I do not recall if the the 2 on each side was threaded uptop for a screw or not...

Hence the post. I'm not 100% sure the diagram/parts on the RealOEM is accurate, even though in theory in should be..