Cover plate assembly, Premier White. Cover plate assembly for use with FocusPRO 6000/5000 and PRO 4000/3000 thermostats. Includes one medium and one large cover plate, bracket for J-boxes and mounting hardware. Medium cover plate is 5 inch x 6-7/8 inch. Large cover plate is 6 inch x 8-5/16 inch. Medium cover plate 5 inch high, 6-7/8 inch wide. Large cover plate 6 inch high, 8-5/16 inch wide.