Prewired 20A Duplex Receptacle Can Be Wired As Standard Duplex or Isolated Ground. Flanges Available Painted In Gray (Gy), Black (BK), Ivory (Vy). Flanges Also Available In Plated Brushed Brass (BS) and Brushed Aluminum (Al). Slide Covers Match The Painted Flange Colors, Gray, Black, 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 Color Slide Holder (AA).