The manual air valve can accurately control the air flow rate and flow direction to ensure stable and efficient operation of the ventilation system. Whether it is a factory workshop, a commercial building, or residential fresh air system, it is necessary for its control over the circulation of the air.Specification Color: SilverMaterial: Galvanized iron, SiliconeOuter Diameter: 76 mm / 3 inchThickness: 1 mm / 0.04 inchLength: 300 mm / 11.8 inch, 100 mm / 3.
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