The Helios SVE 100 offers a simple and cost-effective solution for volume control in central ventilation systems. This duct insert also functions as a noise absorber and pressure regulator. Constructed from fire- and mould-resistant foam, it complies with emission class M1 and fire class B standards. The pre-punched openings allow for easy airflow adjustment. In case of fire, the material does not emit harmful smoke or toxic gases. The SVE 100 is compatible with all standard poppet valves, making it a versatile and safe choice for ventilation applications.