Features: 1. 100% brand new and high quality. High hardness, good strength, durable. 2. True HEPA filter to remove most dust, allergens, bacteria and odors. 3. Compatible with Shark NV350, NV351, NV352, NV355, NV356E, NV370, NV391, UV440, UV490CCO, UV540 series vacuum cleaners. 4. Easy and convenient to install. 5. Never release hazardous substances or ozone, Eco-friendly.  It is highly recommended that you change your filters every 3 to 6 months for optimal performance of your Shark vacuum. Specification: Condition: 100% Brand New Material: Plastic/Foam Color: As Pictures Shown