
Ventilation Balance Manual Control Cav Constant Air Volume Dampers. Stable Airflow Control: Manual CAV dampers deliver balanced, constant airflow for optimal ventilation and energy efficiency. Durable Galvanized Steel: Constructed from galvanized steel ensuring strength, corrosion resistance, and long-lasting performance. ISO9001 and CE Certified: Product meets international standards with ISO9001 and CE certification plus EXOVA and SGS test reports. Customizable Design: Supports tailored solutions including round shapes and various diameters from 125mm to 315mm. Wide Application Scope: Ideal for commercial ventilation, cleanrooms, industrial environments, and both new builds and retrofits. Non-Powered Operation: Easy-to-operate design provides dependable control without relying on external electrical systems. Global Export Reach: Solutions exported to over 50 countries worldwide including North America, Europe, and Southeast Asia. Established Manufacturer: GFI HVAC has been an integrated manufacturer since 2011 with three production lines and skilled technicians.