This Lochinvar flue connection is designed with a 2-inch diameter, suitable for CD40-100 models. The product serves as an essential component in heating systems, specifically designed to safely vent gases and heat from the combustion process outside of the building. It is constructed from durable materials that can withstand high temperatures and corrosive substances, ensuring longevity and reliable performance. The Lochinvar flue connection is engineered to meet industry standards for safety and efficiency.