Durable Construction: Heavy-duty metal housing designed to resist thermal stress within the draft inducer assembly

High Flow Capacity: Supports up to 100 CFM

When excessive heat is detected outside the combustion chamber—often caused by a cracked heat exchanger

the 0121409 meets current environmental regulations for potable water systems

While both are 1-inch inlet valves

Armstrong Furnace R02708C026 Burner 320735-701 Durable Construction: Heavy-duty metal housingThe Armstrong Furnace R02708C026 Burner is a critical OEM replacement part engineered to maintain the efficiency and safety of your heating system. This high performance furnace burner assembly includes an integrated pilot bracket, ensuring precise alignment for the ignition source and consistent flame stability across the heating cycle. Designed specifically for compatibility with Armstrong Air and Allied furnace models, this component is essential