23H11 | Flue Gasket | Lennox

**Lennox® Flue Gasket (23H11)** The Lennox® Flue Gasket (23H11) is an essential component for ensuring proper combustion and maintaining the efficiency of your Lennox furnace. Designed to seal the flue pipe connection, this gasket provides a secure and airtight fit, preventing the escape of harmful combustion gases and ensuring the proper flow of air through the system. Crafted from high-temperature-resistant materials, this gasket withstands extreme heat and harsh chemicals, guaranteeing long-lasting durability. Its precise dimensions and tailored design ensure a perfect fit with Lennox furnaces, providing reliable performance for years to come. By effectively sealing the flue connection, the Lennox® Flue Gasket (23H11) prevents backdrafting, ensuring the safe and efficient operation of your heating system. Its robust construction and precise fit contribute to optimal system efficiency, minimizing energy consumption and reducing operating costs. Maintain the integrity and performance of your Lennox furnace with the Lennox® Flue Gasket (23H11). Trust our HVAC supply store for the best prices and fast shipping on all your HVAC parts and accessories!