The Silent system serves two requirements. In addition to its acoustic properties, it can also be used as an air ventilation floor. The free cross section of 10.5 % to 26 % allows an air flow of app. 28 to 69 m³ per m² and hour based on a pressure drop of 20 Pa, e.g. with an applied needlefelt quality Vebe Strong 956.
The steel variant Type 3 Silent with 32% free cross-section also allows an air flow rate of approx. 120 m³ per m² and hour with an applied needle fleece quality Vebe Strong 956 at 20 Pa pressure loss.