Lutron RP-FDU-10-WH Replacement Plugs For Dimming - White FinishLutron RP FDU 10 WH RP FDU 10 WH Product Description The Lutron RP FDU 10 is required for use with Lutron receptacles made for dimming but will also work in a standard receptacle. Designed to easily replace the existing plug on your lamp, Lutron plugs allow for a National Electrical Code compliant way to control a portable lamp with a dimmer. When paired with a top quality Lutron dimmer receptacle, the Lutron RP FDU offers remarkable safety features