This Raypak heat exchanger component is designed for use in pool heaters. The product, often referred to as a tube bundle, is constructed from copper and includes the tubes, upper header, lower header, and baffles. The primary function of this component is to facilitate the transfer of heat from the heater to the pool water. It achieves this by allowing hot gases to pass through the tubes while water flows around them, thus enabling efficient heat exchange. The inclusion of headers and baffles ensures optimal flow of both gas and water within the system. This Raypak component is compatible with a range of their pool heater models.