Quadra-Fire Snapdisk Part #230-1960 Replacement manual reset snap disc #2, 175 degree for Quadra-Fire and Heatilator Eco Choice pellet stoves. This part is also known as a thermodisc or snap switch. Fits the following Quadra-Fire or HHT Pellet Stove models: Quadra-Fire Pellet Stoves: Castile FS (Pre serial # 0071195663) Castile Stove (Pre serial # 0071195663) Contour Santa Fe (Pre serial # 0071642320) Heatilator Eco-Choice Pellet Stoves: PS35 PS50 CAB50 Quadra-Fire part # 230-1960 Replaces part # 812-3420 Original Quadra-Fire Parts. No Generics