Rheem-Ruud AS-58632-87 Stainless Steel Heat Exchanger Assembly is a durable heating component designed to transfer heat efficiently in compatible gas-fired HVAC equipment. It works by separating combustion gases from the indoor airflow while allowing heat to pass through the stainless steel surfaces, delivering safe and consistent warm air. Designed for use with compatible Rheem-Ruud ... https://www.partshnc.com/heat-exchanger-assembly-ss-as-58632-87-rheem-ruud