The Rheem SP21200C Service Kit includes a spacer and transition piece designed for optimal performance in Rheem water heating systems. This essential component ensures proper alignment and connection between various system parts, enhancing efficiency and reliability. Made from durable materials, it meets industry standards for quality and safety. The kit is compatible with multiple Rheem models, making it a versatile choice for maintenance and repairs. Dimensions and specifications are tailored to fit seamlessly into existing setups, ensuring a hassle-free installation process.