Compatibility: Fit For A939Kbgs, A937Kgms, A907Gms, A927Kgms, A925Ksm, A927Kvms, A905Rm, A908Vmr, A929Kvm, A913Bm, A958Sg, A9Ultimate, A9Single, A9Multi, A9Petnbed2X, A9Master2X, A9Petnbed, A9Essential, A9Multi2X, A9Advanced, A902Rm, A906Sm, A958Ka, A958Sa, A9Ddcarpet2, And A9Ddcarpet. | | Durable Construction: The Replacement Vacuum Cleaner Filter Made From High-Quality Abs Plastic And Specialized Non-Woven Fabric Filter, Providing Excellent Breathability, Waterproofing, And Flexibility. | | Dust-Free Seal: The Rubber Ring On The Filter Tightly Adheres To The Plastic Frame, Ensuring A Completely Sealed Unit While Maintaining Proper Airflow, Preventing Dust From Leaking Into The Vacuum Motor | | Replacement Indicator: Replace The Filter Approximately Every Three Months For Optimal Performance, Or Sooner If Heavy Soiling Occurs. For Less Polluted Environments, Replacement Every Six Months Is Recommended | | Hassle-Free Installation:With Its User-Friendly Design, This Replace.