The Nilfisk 107419590 is a pack of five genuine fleece filter bags designed for use with Nilfisk AERO and ATTIX series industrial wet/dry vacuum cleaners. These durable fleece bags provide efficient filtration, capturing fine dust and debris, and are essential for maintaining optimal vacuum performance and extending motor life. They are suitable for various models, including AERO 21, AERO 26, AERO 31, ATTIX 30, ATTIX 33, ATTIX 40, ATTIX 44, ATTIX 50, ATTIX 751, ATTIX 761, ATTIX 961, and ATTIX 963.