5 Inch Backdraft Damper - Galvanized Steel Dryer Duct Shutter - One-Way Airflow Backflow Draft Blocker/Preventer - Dryer Exhaust Vent 4 Inch Duct Damper - HVAC Ventilation Home Improvement

HVAC OV works with manufacturers, markets and distributes products and system solutions for simplified construction and improved indoor climate. // The products are characterised by their high quality, ease of assembly and consideration towards the environment. // We simplify construction // At HVAC OV, we simplify construction because it is in human nature to build. By simplifying in every stage, we make it easier to install seamlessly. We develop products with people in mind. We offer solutions that meet the demands for comfort, simplicity and aesthetics. // We are driven by a strong passion and desire to continuously offer improvements. // Partly for all the customers and partners who use our products and solutions, but also for the people who live and work in buildings that uses our products. We simplify construction and help to create a healthy indoor climate. // Ideal for all tumble dryer vent pipes / hoses, bathroom extractors & vents, air conditioning and heating units, kitchen vents & fans, all home wall and ceiling vents, heat transfer and ventilation systems, gas & electric dryers, cooker hood extractors, as well as a wide variety of industrial uses.

• PRECISE SIZE & FIT – 5 INCH DUCT CONNECTION - Designed for standard 5" ventilation ducts. Overall body lenght: 3.54". Both end diameter: 4.88". Both end insertion depth: 1.57" per side. Ensures a secure, centered fit inside round HVAC ducting.
• GALVANIZED STEEL CONSTRUCTION - Damper body and valve flaps are made from high-quality galvanized steel. Features rubber foam gasket inside the damper for air tight inner flap closure. Corrosion-resistant and built for demanding HVAC environments. Operating temperature range: -4°F to 212°F
• BACKDRAFT PREVENTION - Lightweight valve wings open under airflow pressure and automatically close when airflow reverses. Integrated rubber sealing ring ensures tight closure, prevents air leakage, and provides quiet, vibration-free operation.
• EASY INSTALLATION - For optimal opening and closing performance, the spring axis must be installed horizontally when used in horizontal ducting. This ensures smooth airflow response and proper automatic backdraft prevention.
• WIDE HVAC APPLICATIONS - Suitable for flexible and rigid HVAC ducting. Ideal for use with range hoods, dryer hose, 4 inch dryer vent, dryer vent draft blocker, hvac damper, bathroom exhaust fans, kitchen ventilation systems, and general residential HVAC installations where backflow prevention is required.