General description Protect your machine by preventing dust from entering the vacuum cleaner, which helps extend its lifespan. This air filter is an economical alternative that offers multiple filtration for clean air. Technical specifications Compatible with Karcher models: NT25/1, NT35/1, NT45/1, NT55/1, NT361 ECO, NT561 ECO, NT611 ECO Installation Tool-free installation Hinged filter compartment allows for easy access without contact with dust