Thoughtful Design: It has a smooth and flat interior for quick ventilation and you can use it to control the airflow for your convenience.

Economical and Practical: You can easily control the airflow or close the air duct when needed, improving the energy efficiency of your system. It prevents backflow and maintains the normal operation of the system.

Ready to Go: Once you receive the product, you can install it directly into the duct without additional assembly, which is very convenient and time-saving.

Burr-free Edges: Smooth, burr-free edges are not only comfortable to touch, but also care for your air duct.

Application It can be used for heating systems in private homes, trade and industry, ventilation systems, smoking areas, residential ventilation, greenhouses, indoor plant cultivation, restaurants, clubs, offices, and etc., for air conditioning (AC), dryers, exhausters, extractors or range ventilators, heating ducts, vents, and other HVAC applications.