Home Revolution Replacement Foam & Felt Filter Kit, Fits Shark Navigator NV42 and UV402 and Part XFF36 Designed to fit: Shark Navigator NV42 and UV402 vacuum models, compare to Shark part # XFF36 Replace with confidence: We back all of our products with a 100% satisfaction guarantee Breathe easy: Washable, reusable 3-piece foam & felt system removes allergens, impurities, and odors from the air and refreshes your home The Home Revolution Mantra: High-quality replacement products at a low price What you get: 2 foam + 1 felt pefilters