The Bosch HEPA hygiene filter was developed for allergy sufferers. It filters 99.95% of fine dust particles, bacteria and pollutants and prevents fine particles, bacteria and allergens from being released back into the room with the exhaust air. The exhaust air is cleaner than the room air. It is suitable for the GS10, GS20, GL-20, GL-25 MoveOn Mini, GL-30, GL-35 MoveOn, GL-40, GL-40S Cosyy'y series. The original accessories from Bosch are perfectly matched to the devices and impress with their durability and precision fit.