This Lochinvar flue pipe is a key component in heating systems, specifically designed for use with the KB 700-800 series of boilers. The pipe measures 6 inches in diameter, ensuring it can handle the high volumes of exhaust gases produced by these powerful boilers. It is constructed from chlorinated polyvinyl chloride (CPVC), a material known for its durability and resistance to heat, making it ideal for use in flue systems. The product's primary function is to safely vent combustion gases and condensation from the boiler to the outside environment.