Standard Solid Curved Face Sizes to Accomodate a Wide Range of New or Existing Applications. Universal Mount Designed to be Dropped into Existing Systems Regardless of Manufacturer. Standard Colors are Metamorphing Rose (Cold) to Grey (Hot), and Traditional White. Optional Colors are Metamorphing Yellow (Cold) to Orange (Hot), and Black. Standard Stocked Voltage: 120 or 220/240V as Noted; Other Voltages are Available.