2 sets Shark NV42 Foam & Felt Filter Kit, Part # XFF36, by AI-Vacuum 2 sets Shark NV42 Foam & Felt Filter Kit (Total 6 pcs) IMPORTANT make sure that both filters are 100% completely air dried before reusing them in your vacuum to avoid permanent damage to your vacuum. Filter Fits Navigator Upright models UV402 & NV42 Designed & Engineered By AI-Vacuum. 100% Compatibility Guarantee. The Seller Value Sourcing is the AI-Vacuum brand owner. We offer the best quality after market parts for your money. Other sellers are not authorized to list under AI-Vacuum brand. Compare to Part # XFF36