80-300mm Galvanized Round Air Duct Check Valve, Airtight Smoke Damper for Ventilation Systems, Non-Return Flap Valve(Diameter 150mm)

• ✔ Durable Galvanized Steel – Corrosion-resistant for long-lasting performance in ventilation systems.
• ✔ Airtight Seal Design – Prevents backflow of smoke, fumes, and odors effectively.
• ✔ Wide Size Range (80-300mm) – Fits various duct diameters for flexible installation.
• ✔ Easy to Install – Lightweight yet sturdy construction for hassle-free setup.
• ✔ Versatile Use – Ideal for HVAC, kitchen exhausts, and industrial ventilation systems.

Material: Galvanized steel for durability and corrosion resistance. Function: Airtight check valve prevents reverse airflow in ducts. Package Includes: 1 Piece Note: 1. Please allow 1-2cm error due to manual measurement. 2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.