Review on Optoma BM-5001U Low Profile Black Projector Ceiling Mount for Optoma by Brett Jarvis

Looks a little expensive for what it's supposed to do but works well. It was very easy to install and the controls are easily accessible and easy to use. I was a little disappointed that there were only 2 settings in the 3D world. The two knobs you get can control left-right yaw (yaw) and side-to-side pitch (roll). Both were necessary in my case and worked well. But you need to properly adjust the scope up/down (step) yourself. I had to add some shims under the back edge to guide it down a bit so it hits my screen properly.