Viking Concealed Cover Plate Assembly, Standard, Brushed Chrome, 139 °F (59 °C) Viking Standard Thread on Cover Plates are low-profile covers used with Viking Concealed Pendent Sprinklers for commercial and residential use. The covers are installed flush with the ceiling to provide a smooth appearance, and are available in several standard decorative finishes to meet design requirements. Viking Cover Plates may also be custom ordered with any color by any paint manufacturer. Diameter = 2 - 3/4 inches