Mt Vernon AE Wall Control Thermostat - 12 Volt AE systems only, also fits EDGE AE Fireplace. Does not fit Mt Vernon Original (Units with slide style thermostat) * Latest revision - Replaces both 7000-308 and SRV7000-451 285 * Quadrafire Original Equipment - No Generics * 7 day programmable features * Flame height control & error codes to help locate problems.