The Rheem SP20064 Thermocouple Replacement Kit is designed for FVIR (Flammable Vapor Ignition Resistant) water heaters. This kit includes a high-quality thermocouple that ensures reliable operation and safety in gas appliances. It is engineered to meet industry standards, providing peace of mind and compliance with safety regulations. The thermocouple is easy to install, making it a perfect choice for both professionals and DIY enthusiasts. Replace your old thermocouple with this reliable kit to maintain the efficiency and safety of your water heater.