The Opal Series 120 Volt AC LED fixture (no driver) is designed to surface mount over a standard 3 or 4 inch junction box and .50 inch deep pancake boxes for ceiling or wall mount applications. Suitable for remodel and new construction applications and is IC rated when used with a 4 inch electrical junction box rated for direct contact with insulation. The Opal is offered in two sizes with two lumen offerings and produces even illumination without diode image. Features a one piece aluminum die formed housing and trim with a white polycarbonate diffuser. The R4509 series includes a universal bracket (NLOPAC-4BKT-2). Dimmable using a TRIAC or electronic low voltage (ELV) dimmer, sold separately. Note: Not all options available. Retrofit: Each luminaire includes a retrofit kit with medium base socket adapter to mount over 4″ or 5″ or 6″ recessed housings. Kit also includes torsion spring brackets that hold luminaire flush against ceiling. Retrofit kit is intended to be used with a lighting fixture as a lamp replacement.