Quadra-Fire Snap Disc #2 for Castile & Santa Fe Pellet Stoves and Inserts Original Quadra-Fire Parts. No Generics Replacement snap disc #2 250-95 degree for Quadra-Fire pellet stoves. Fits the following: Castile FS (serial # 0071195663 and higher) Castile B FS (located on drop tube) Castile Stove (serial # 0071195663 and higher) (located on drop tube) Santa Fe MBK Santa Fe (serial # 0071642320 and higher) Santa Fe Insert Santa Fe Insert MBK