Each access plate comes as two parts A and C as shown in attached photos.

Photo 'A' shows bottom of access plate at 175mm dia. This is approx.1.5mm thick.

This plate can be made to a larger size if required and also have a hole cut in it to take a downlighter.

Photo 'B' shows top of plate with springs.

Photo 'C' shows ceiling ring cut out size is 160mm the top flange is 220mm dia. This gets cut through the sidewall and then can be corkscrewed though ceiling, pulled down and plastered in. Once in place the access plate can be fitted without damage to ceiling.