The Helios MRV 315 is a robust mounting ring designed for vertical installation of fans, such as on shaft walls or in smoke extraction systems. Constructed from galvanized sheet steel, it features four integrated brackets that allow for direct mounting or attachment of vibration dampers. Engineered for high-temperature environments, the MRV 315 is suitable for use in smoke extraction applications with temperature resistance ratings of F300 and F400. This ring provides a secure and reliable solution for vertical fan installations in both commercial and safety-critical environments.