Protwinline double plaster plated, touch, inner cover has high structure suitable for double plaster plate installation. However, there is a suitable external frame.
Protwinline revision cover features are listed below.
Plasterboard Cover Features
Aluminum inside and outside frame
Internal structure of the inner cover for double gypsum plate mounting
Screw mounting of plasterboard in inner door
Also removable swich system for touch opening
Fully removable inner cover from outer cover
Finally wire system to keep the inner cover constant at a certain angle