Assembled unit. Prewired 20A duplex receptacle can be wired as a standard duplex receptacle or isolated ground. Flange available in painted gray (GY), black (BK), ivory (VY) or brushed metal finishes in aluminum (AL), and brass (BS). Slide covers match the painted flange colors: gray, black, and ivory. Aluminum and brass flanges shipped with black slide cover. Brass flange also available with nonmetallic brass colored slide holder (AB). Aluminum flange also available with nonmetallic aluminum colored slide