Williams Comfort Products 11B49 Flue Extension

The Williams Comfort Products 11B49 Flue Extension is a venting part that extends the exhaust pathway for gas-fired heating equipment, allowing combustion gases to reach the outdoor termination point when additional exhaust length is required. It is intended for applications involving wall thicknesses up to the specified mounting range in HVAC systems, providing the extra reach needed to complete the duct assembly. It joins directly with the existing flue sections to create a continuous passage for exhaust flow. Proper airway routing ensures efficient discharge of combustion gases and maintains the intended draft throughout the vent system.