We offer discount for large quantity. Welcome to contact with us! MAINTAIN QUALITY: This filter is exclusively for the Levoit Vital 100S Smart True HEPA Air Purifier to ensure the best performance.3-STAGE FILTRATION: Three stages of filtration trap a wide variety of airborne contaminants, such as vehicle exhaust, smoke, and toxic compoundsCLEAN HOUSEHOLD ODOR:replacement filter is made of high-efficiency activated carbon filter clears your home of unwanted pet odors, smoke, fumes, and VOCs in the air and cleans household odors without worrying about second-hand pollution. It's a good choice for animal lovers or smokers, to improve the home air quality and your health.COST-EFFECTIVE: This filter is made to last 6-12 months and easy to replace, so you don't have to worry about frequent and difficult replacementsColour:black+greenMaterial:composite materialPackage Contents:1 x FilterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.