I though I would share my solution. I really wanted to use the Polk Audio Monitor40 speakers as rear surround speakers. I also wanted to mount them to the ceiling. These speakers are pretty heavy and all the speakers mounts I was looking at looked flimsy. So last week I found these monitor mounts on sale at Newegg. I mounted the speakers yesterday and I think it worked out pretty good. The speakers don't have any preinstalled mounts on them so I attached them to the mounts with 8 screws each.