Nispira Replacement Filter Set for Shark XFF350 & XHF35 Navigator Lift-Away NV350, NV351, NV352, NV355, NV356, NV357, NV360, NV370, NV391, UV440, UV490, UV540, 2 Sets Includes 2 Foam Triangular Pad Filters, and 2 Felt Triangular Filters Genuine Shark Filters Part XFF350 - 2 Filter Sets Per Order Money Saving Bulk Filter Kit of 2 Sets of Filters, 4 Total Filters. Avoid Loosing Your Generous Warranty Given by Shark - Use ONLY Genuine OEM Shark Filters Washable and Reusable Filters