Gently curved aperture provides soft, even illumination; Slim 3-3/4" depth for shallow plenum applications; Seamless design prevents light leak; Easy to install without the use of tools; PMMA lens reduces the risk of yellowing from UV exposure; Optional surface mount kit preserves continuity; Rated for direct contact with insulation; Quick-wire access plate in back of fixture housing for easy attachment of incoming power supply; 2x2 and 2x4 sizes available; Buy American Act compliant; Available with Avi-on wireless fixture controls; Made Right Here in the USA