High Limit attach Disc ( 200°F): The 200°F high limit attach disc replaces SRV230 0900 and PP3260 parts, acting as a thermostat override switches to stove overheating during normal operate Thermostat switches ( 145°F): Features a normally closed thermostat switches calibrated to 145°F, replacing SRV230 0060 and 812 0320 parts It cut power when exceeding 145°F for stable overheating protect Perfect Compatibility: This 3 piece attach disc switches set is specifically designed for Quadra classical Bay CB1200 wood stove, providing direct replacement for temperature sensors with easy installation High Limit attach Disc ( 250°F): Includes a 250°F manual reset attach disc suitable for SRV230 1290 and 812 3650, offering backup burn protect against potential backfires and overheating risks Premium Materials: produced of strong aluminum alloy, bimetal, and copper for long lasting Not suitable for CB1200i pellet inserts verify classical Bay CB1200 model before purchase, Manufacturer: CAZSTYK