EnviroCare Replacement Allergen Filters for Shark NV22L Navigator Uprights. 4 Piece Foam and Felt Filter Kit Includes All Filters Used on the Shark NV22L Vacuum 2 Foam Circular Filters, 1 Felt Circular Filter, and 1 Felt Exhaust Filter Fits Shark Models NV22, NV26, NV36A, UV410, UV400, UV410. Replace: Shark EuroPro Part Number XF22