HQRP® Washable & Reusable FloorMate Filter plus HQRP® Coaster; * HQRP filters are washable and reusable! (unlike other filters); * This filter is semi HEPA and retains 95% of particles down to 0.4 micron. * Dimensions: 4.25" x 1" x 3.13" * 100% Compatible with Original filter; Change every 3 to 6 months. 2 weeks DOA replacement warranty!