Caldera 120-277V LED Flush MountExtremely small in profile, the Caldera extends less than 2" from the ceiling surface with a recessed optical lens housed in the center of an angled edge. The result is a bright light source with wide optics and minimal glare. With a diameter of 3. 25 inches, the flush mount includes a mud in plate for architectural finishing as well as a cover plate for simpler installations that do not require additional preparation.