Optimal Combustion Efficiency: Seals the blower interface to ensure the precise air-to-fuel ratio required for high-efficiency operation

This model features a standard 7-1/2 inch x 7-1/2 inch mounting pattern

enhancing overall system safety

This wheel is frequently used in Reznor F and FE series

BROAN-NuTone SV18199 Damper 323269-701 Optimal Combustion Efficiency: Seals theThe BROAN NuTone SV18199 Damper is a critical OEM replacement part engineered for professional grade airflow regulation in high static and variable flow ventilation systems. Designed to meet the precise tolerances required by veteran contractors, this backdraft damper ensures maximum system efficiency by preventing unwanted air infiltration and isolating specific duct runs when fans are not in operation. Its heavy duty construction is built to