High Compatibility --- Suitable for solid-liquid vacuum cleaner / water and dust vacuum cleaner. Features --- Filter for maximum filtering effect without loss of suction power. The filter is suitable for wet and dry cleaning - no filter change is required. For Multiple Use --- Simple tool-free installation thanks to the foldable filter compartment on the vacuum cleaner. Filter is washable and therefore easy to clean and therefore durable. Suitable for: Karcher vacuum cleaner, MV4 MV5 MV6 vacuum cleaner flat filter