HQRP Foam and Felt Filter Kit for Shark Navigator NV36 NV36A NV42 UV410 NV44, NV44 26, NV46, NV46C Swivel Deluxe, Deluxe Upright Vac Vacuum Cleaner Coaster HQRP&reg; Filter Kit Donut Shape plus HQRP&reg; Coaster; 2 Washable Pre-Motor Foam Filters, 1 Post-Motor Felt Exhaust Filter; Before making a purchase please make sure your filter looks exactly like the one on the photo. If your original filters has NO hole inside, our filter will not work with your vacuum cleaner. 2 weeks DOA replacement warranty!