Cover ring that is perfect when you want to replace old halogen and compact fluorescent lamps and the hole dimensions do not fit. Instead of redoing the roof or installing new ceiling tiles, you simply place your downlight directly in a cover ring. The cover rings have a surface treatment and stainless springs that can withstand both indoor and outdoor environments. Covers old boreholes up to 175mm and 245mm respectively and fits luminaires with borehole dimensions up to 85mm with a maximum outer diameter of 96mm.