The Helios SVE 315 offers a simple and economical method for regulating air volume, managing duct pressure, and reducing noise in central ventilation systems. This insert is easily installed by sliding it directly into the ductwork and features pre-punched holes that enable straightforward, precise adjustment. Constructed from mould-resistant and fire-rated foam, it complies with emission class M1 and fire class B, ensuring safety with no emission of toxic gases or smoke in case of fire. The SVE 315 is compatible with all types of poppet valves, making it a versatile and reliable component for modern air handling setups.