Broan-NuTone BD6 Pressure Relief Damper 6-Inch Round

The Broan-NuTone BD6 Pressure Relief Damper is a 6-inch round backdraft damper designed to prevent air backflow in residential and light commercial ventilation systems. This gravity-operated damper automatically opens when the exhaust fan is running and closes when the fan is off, preventing outside air, odors, and drafts from entering through the ductwork.

Key Features:

• 6-inch round diameter fits standard residential duct systems
• Gravity-operated blades open and close automatically with airflow
• Lightweight construction for sensitive operation with low airflow
• Prevents backdrafts, cold air infiltration, and unwanted odors
• Galvanized steel construction for durability and corrosion resistance
• Easy installation in horizontal or vertical duct runs
• Compatible with bathroom fans, kitchen exhaust, and dryer venting applications

This backdraft damper is ideal for use with Broan-NuTone ventilation fans and other exhaust systems where preventing reverse airflow is essential. The BD6 helps maintain indoor air quality and energy efficiency by ensuring one-way airflow through ventilation ductwork. Also known by part number 23002002.