Replacement Fan Thermodisc (60T12 110 Degrees) compatible with most Regency Wood Stoves and Gas Stoves, including: Regency CS2400 Alterra, FP90, P42, R90, EX90, F1100, F2100, F2400M, F5100, Vancouver F2402M, & F3100 Classic (Wood Stoves) P33, P36, P42, P48 (gas units) and more.
The snap disc is designed to turn the blower on or off depending on the heat requirement. When the fireplace is cold – it cuts the circuit. When the fireplace cavity is hot – it turns it on.