The Helios MRV 630 is a sturdy mounting ring intended for vertical installation of fans, such as on shaft walls. Manufactured from galvanized sheet steel, it features four mounting brackets that enable direct fan attachment or installation with vibration dampers. Rated for use in smoke extraction systems, the MRV 630 offers temperature resistance classifications of F300 and F400, ensuring dependable performance in fire-safe ventilation setups. This mounting ring provides a reliable and heat-resistant solution for vertical fan applications in demanding environments