Projector mount question

It seems like it would work. It says it supports 30 lbs. But I didn't think a suspended ceiling system could support that much weight. I'm wondering about ceiling tile/projector movement though(if people are walking above, etc). How much does your projector weigh?

When I made my mount, I just cut a hole in the ceiling tile, and the pipe runs thru the tile, and gets bolted to blocking between 2 joists. The tile supports zero weight.

I agree. While the plate seems like a good idea, your weak link is the grid you're putting it in. If the plate doesn't somehow tie in directly to the joists, I'd stay away. That can be one expensive repair if it fails.

those types of ceiling grid plates are usually only acceptable in many locations when equipped with a cabled safety harness.
The Chief or Peerless version of the same style mount include a small gauge safety cable to attach the frame to a structural member. screw four eyebolts as directly above the four corners of the plate as possible and run wire rope through a hole in the plate to your anchor point. snug up the slack and ratchet down your wire clamp. (unless you can find the cool self latching type). safety factor of al least three if your anchor points are up to the job, plus it can help take the weight off your grid, which would likely sag a little.