[4 Pack] Fits 8 Inch Neck Air Duct | Steel Butterfly Damper by Handua | for Round Ceiling Air Supply Diffuser with Plastic Key-Handle | Black | Outer Dimension: 9-1/2"

The Handua ceiling damper offers long-lasting performance with its durable powder-coated steel construction. It features a removable adjustment handle for easy airflow control and operates quietly thanks to its advanced butterfly damper design. Ideal for improving indoor air quality in any space, it ensures smooth and efficient ventilation. Installation is quick and hassle-free with three screws—small holes attach the damper to the diffuser, while larger holes secure it to the duct opening.

• SIZE OPTION - Handua 8 inch damper for ceiling application. This ceiling damper controls air flow for 8" [Neck Size] round ceiling diffuser. Removable adjustment handle for air flow control.
• DURABLE CONSTRUCTION - Crafted from high-quality steel with durable powder paint coated, our ceiling air supply diffuser damper is built to last. Its sturdy construction ensures long-term durability, making it a reliable choice for both residential and commercial applications.
• EFFICIENT AIRFLOW CONTROL - Our air diffuser butterfly damper provides precise and efficient airflow control, allowing you to customize the ventilation in your space with ease. Achieve optimal comfort by regulating the airflow according to your preferences.
• QUIET AND SMOOTH OPERATION -With our air vent damper, experience whisper-quiet operation and smooth airflow adjustments with our advanced damper design. Enjoy a peaceful environment while effectively managing the airflow in your home or office, enhancing overall indoor air quality with this round ceiling damper.
• EASY INSTALLATION - Effortless installation is facilitated by the inclusion of three screws, making the process quick and hassle-free. Small screw holes for attaching damper to the diffuser, large screw holes for mounting the damper to the duct opening.