Heating Cooling Products BDD10 Back Draft Damper

Product Description

The HEATING COOLING PRODUCTS BDD10 is a back draft damper designed to prevent reverse airflow in ventilation and HVAC duct systems. Back draft dampers allow air to pass in one direction and automatically close to block unwanted return flow when the system is not operating. This unit is sized at 250 millimeters, making it suitable for medium-diameter duct runs. HVAC technicians and ventilation installers handle this type of component during new installations and system retrofits where preventing back draft is a code or performance requirement.

Back draft dampers of this type are commonly installed in residential and light commercial ventilation systems, including exhaust fans, range hoods, bathroom exhaust ducting, and forced-air supply or return branches where reverse airflow is a concern. The 250-millimeter sizing fits standard round or rectangular duct configurations of the corresponding diameter. This damper is typically positioned at or near the point of discharge or at a branch junction to ensure reliable one-way airflow control.

Key Features

• Prevents reverse airflow in ventilation and HVAC duct systems
• Gravity-operated or pressure-actuated design closes automatically when airflow stops
• 250-millimeter nominal duct size fits standard medium-diameter duct applications
• Suited for exhaust and supply duct installations in residential and light commercial settings

Compatibility

Designed as an OEM-style replacement or new-installation component for ventilation and HVAC duct systems requiring a 250-millimeter back draft damper.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified ventilation installer in accordance with applicable mechanical codes. Power down or de-energize any associated fan or air-handling equipment before beginning installation. Ensure the damper is oriented correctly for the intended airflow direction, as reverse installation will prevent proper operation. Secure all duct connections with approved fasteners and sealant to maintain system integrity.

Technical Specifications

• Duct Size: 250 millimeters
• Product Type: Back Draft Damper

Standard Information

• Brand: HEATING COOLING PRODUCTS
• Manufacturer Part Number: BDD10