Is there a track (which one and where. An I get it in Melbourne ) that can be recessed in 10mm ceiling plaster? I want to install shears for my large stacker doors but don’t want the track to show. Plaster is about to be installed so I was wondering if there’s something out there that can be used for this purpose. Would the plasterer need to do anything to prepare for the recessed track or does the track come later?