The SKJ71RC Heat Exchanger Kit for NR981-DVC from Noritz America Corp is designed to enhance the efficiency of your gas water heating system. This kit includes all necessary components for a complete installation, ensuring compatibility and compliance with industry standards. Made from high-quality materials, the heat exchanger provides excellent thermal conductivity and durability. Its compact design allows for easy integration into existing systems, making it ideal for both residential and commercial applications. This kit is essential for maintaining optimal performance and energy efficiency.