840 & 870- PP Dampers Make: Syannlab Solutions Pvt. Ltd. These dampers are crafted from high-grade, UV-treated polypropylene, ensuring durability and suitability for outdoor and rooftop applications. The material is meticulously chosen to resist wear and tear from harsh environments. Unlike traditional dampers, these units are designed for minimal airflow obstruction. They allow smooth air passage while operating efficiently and quietly, minimizing pressure drops and turbulence. This makes them ideal for applications demanding high airflow rates with low noise levels. Additionally, the dampers offer exceptional leak-proof performance when closed. For optimized space usage and to minimize self-damage under pressure, the dampers come in both cylindrical and rectangular shapes. These shapes also enhance airflow and reduce friction, resulting in improved overall system performance and damper durability. The units are easy to stack, store, and transport, boasting a sleek and modern design. For manual operation before actuator installation, the dampers are conveniently hand-operable. To ensure the highest level of quality and safety, damper manufacturers should possess ISO 9001, 14001, and 45001 certifications. These certifications demonstrate the manufacturer's dedication to excellence in quality management systems, environmental responsibility, and occupational health and safety practices. To ensure the highest level of quality and safety, the controller meets the CE requirements of 30 & 35 derivatives. The device manufacturer should possess to ISO 9001, 14001 & 45001 certificates, further demonstrating their commitment to excellence.