Ceiling Mounting to be able to change projector distance

[wbond]

There was an aftermarket type plate that allowed sliding for and aft for this purpose. Not sure who provided it though, but some people did get it and posted pictures of it.

Bumping this - I’m thinking about doing something similar to allow the projector accommodate different use cases at 4:3 and 16:9, I will need to be able to slide the projector back and forward about 1metre. Is there any solution available on the market, or is this going to be a DIY job? Cheers