The Mountain Air 310 m3/h, 100x400 activated carbon filters (416G) are a worthwhile investment in quality. They require very little maintenance, are available with anti-dust covers, reduce fan noise, are lightweight and have a long lifespan. Ideal for reducing vibrations. Recommended air flow: 310 m3/h, Maximum air flow: 350 m3/h, Connection: ∅ 100 mm, Height: 40 cm, Lifespan: +/- 30 months.