Please check that the bulbs you are using are compatible with the dimmer before purchasing. Please note the mountign frame will screw into the backbox (right and left) and the face plate will screw into the mountign frame (top and bottom) BG Evolve Matt Black 2 Gang Light Switch 1x Trailing Edge LED Dimmer 1x 2 Way Custom Switch BG Electrical Single Wall Light Switch, Wide Rocker, 2 Way, Screwless Front Plate, Round Edges, Evolve, Matt Black, 20A, 16AX, PCDMB12WB BG Evolve PCDMG81B Matt Grey Single Dimmer Switch 2 Way Trailing Edge 200W RPCDB12 - 1x 2 Way Single Pole Switch RPCDBDTR- 1x Dimmer Switch Angled in-line colour coded captive terminals Modern Slim profile RPCDMB2B- 1x 2 Gang Cover Plate 1x 2 Gang Grid Yoke Frame, 1x 2 Gang Cover Plate, 1x Trailing Edge Dimmer Module, 1x 2 Way Single Pole , !, !, ! BG Nexus Series. BG Evolve Series. 1x 2 Gang Cover Plate. Trailing Edge. BG Evolve PCDMG22B Matt Grey 2 Gang 13A Switched Socket Outlet-Black Insert. BG Evolve PCDMB22B Matt Black 2 Gang 13A Switched Socket-Black Insert PLEASE NOTE THIS WILL ONLY WORK WITH TRAILING EDGE LED!, !, ! Bg Dimmer Switch BG Evolve Black Chrome Trailing Edge LED 200W Single Dimmer Switch 2-W BG Evolve Switch