The Helios SVE 200 is an efficient and economical insert designed for volume control in central ventilation systems. It supports multiple functions, including noise absorption and pressure balancing, ensuring optimal airflow conditions. Constructed from mould- and fire-resistant foam, it meets stringent standards for emission class M1 and fire class B, preventing the release of toxic gases or harmful smoke in the event of a fire. The insert features pre-punched openings for easy and accurate adjustment and is compatible with all standard poppet valves, making it a practical and safe addition to any modern ductwork system.