HQRP Filter Kit 2-Pack for Shark XFF36 Navigator NV36 NV36A NV41 NV42 UV410 NV44, NV44 26, NV46, NV46C Swivel Deluxe Upright Vac Vacuum Cleaner, Foam & Felt Filter Set, Donut Shape Coaster HQRP&reg; Replacement Filter Kit 2-Pack plus HQRP&reg; Coaster; 4 Washable Pre-Motor Foam Filters, 2 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 filter has no hole inside, our filter will not work with your vacuum cleaner. Compatible With: Shark XFF36 Navigator NV36 NV36A NV41 NV42 UV410 NV44, NV44 26, NV46, NV46C Swivel Deluxe Upright Vac Vacuum Cleaner, Foam &amp; Felt Filter Set, Donut Shape; 2 weeks DOA replacement warranty!