Finish: Black Lamp Type: LED Material: Glass Back Plate Width: 4.5" - Back Plate Length: 4.5" Back Plate Width: 4.5" - Back Plate Length: 4.5" Designed with a recessed optical lens housed in the center of a sloped interior edge, the Caldera collection provides a luminous light source with minimal glare and intriguing beam angle. The collection's flush mounts feature an extremely small profile, extending less than 2" from the ceiling surface. With a diameter of 3.25 inches, the flush mounts also include a mud-in plate for clean architectural finishing applications as well as a cover plate for simpler installations that do not require additional preparation.