Lampholder, Bulb Base Type Recessed Double Contact (R17d), Color White, Compatible with Grainger Part Number Not Applicable, Compatible with Manufacturer Model Number Not Applicable, Features For 20 ga Panel Thickness, Horizontal Contacts, Non-Shunted, Pedestal Type, Recessed Double Contact, with Fixed End. Quickwire Terminals, Length 1 3/4 in, Product Type Lamp Holder, Voltage 600V AC, Watts 660 W, Connection Quickwire, Finish , Mounting Slide-On, Compatible with Brand Universal