Edwards flush mount grilles and wall boxes are provide flush mounting for any 4 in, 6 in or 10 in Adaptable. The grilles have a flat white finish and are ideal for use in offices where a more subtle look is desired. The grilles also provide protection against tampering and vandalism, as the bell is completely covered. The wall box has a gray enamel finish and must be ordered separately. 512-A may also be used with 338 and 339 series chimes.