This heat exchanger is a three-cell assembly module designed for use in HVAC systems. It is manufactured by York and is made from high-quality materials to ensure durability and longevity. The heat exchanger is designed to efficiently transfer heat between the combustion gases and the air being heated, making it an essential component of any heating system. Its compact size makes it easy to install in a variety of applications, and its reliable performance ensures that it will provide years of trouble-free operation.