Tjernlund Products BD-8 Backdraft Damper For 8" Ducts

The Tjernlund Products BD-8 Backdraft Damper is an 8-inch duct component that is used in HVAC systems. It is installed in ventilation or exhaust ducts and allows air to flow in one direction and closes automatically when reverse flow occurs, blocking drafts and energy loss. It is used in conjunction with exhaust fans, range hoods, heating or cooling equipment and it increases system efficiency and indoor comfort. The damper operates with a spring-loaded mechanism for durable performance without external power. It provides better air flow and less stress on equipment is suitable for residential or commercial applications.