The CFB3-KIT retrofit installation kit for the CF230 cleverly provides a firm fixing behind plasterboard/Sheetrock and requires just three screws to complete the fit.
NB: The retrofit option is not flush fitting and the grille will sit slightly proud of the ceiling surface. For more information, watch our product video.
CF230 Installation Guide
CFB3-KIT CAD Drawing
Custom Install Product Guide
CFB3-KIT Retrofit Bracket Images