The premium dome is powder-coated black on the outside and reflective white on the inside for added luster and long life;Large 8.5 size fits a wide varitey of incandescent, fluorescent and ceramic heat emitting bulbs;Topped with a ceramic socket that lasts under high heat;6-foot power cord with an in-line on/off switch;A spring clip that holds the dome securly in place on screen enclosure tops is included