
Stainless Steel Centrifugal Box Fan Low Noise Built-in AC Motor Commercial Ventilation. Low Noise Operation: Noise level 40 Db and above ensures quiet operation for commercial environments. Durable Construction: Galvanized steel sheet housing and impeller provide long-lasting durability. Comprehensive Warranty: 3 Years warranty coverage included for peace of mind. Flexible Sizing Options: Available in 4 sizes: 7-7, 9-9, 10-10, and 12-12 to fit various needs. OEM and ODM Support: Full customization available from samples or designs with OEM/ODM services. Online Technical Support: Dedicated online support provided for after-sales assistance. 100% Quality Inspection: Every finished product undergoes visual and functional inspection before shipping.