Many Uses: Perfect for cabinet lighting, small display cases, exhibits, office and medical work stations, shelf lighting, showcase lighting, under cabinet lighting, merchandising, and bars FIXTURES Dimensions: If the xenon puck light is surface mounted, it has a total depth Of 1-7/16 inches with a round face that measures 2-9/16 inches in diameter. If the puck light is recessed mounted, it needs a circular hole that is about 5/8in deep and 2-1/8 inches in diameter. When it is recessed only about 1/2 inch of trim will show. Mounting: The xenon low voltage puck light can be either surface mounted or recessed mounted Frame: Heat-resistant plastic frame is designed for thorough airflow ventilation with a frosted glass lens Finishes: White, black, or chrome Lens: Frosted glass diffuser for even light distribution (Because xenon lamps are much cooler than halogen lamps the lens does NOT have to be made of tempered glass. ) Fixture Heat: Cooler than halogen. Orientation: Has been designed to be used so that the light is directed downward. If the Puck Light is installed so that it is facing upward, too much heat may be trapped inside the fixture.