We offer discount for large quantity. Welcome to contact with us! High efficiency filters can clean the air in your home. Remove dirt and dust, improve the air quality of your home, easy to install and remove, you can take it off for cleaning, and put a new one in its place for replacement.Compatible with PARTU BS-03 Air Purifier,This highly efficient replacement filter elements is fully compatible with BS-03 HEPA air purifier part U and part X.A true HEPA filter can capture 99.97% of allergens in the air, below 0.3 microns. Remove pollen, pet dander, mold spores, dust mites, etc.Pre-filter removes large air contaminants like pet hairs and dust. Activated Carbon Filter absorbs household odors from pets, cooking, smoking, and more.Easy to replace and dispose, no tools required.Replace every 6 months for optimal performance.Maintain strong suction and extend the service life of the air purifier.Material:Composite materialcolour:blackPackage Contents:3 x Air purifier filter elementsOnly the above package content, other products are not included.Note: Light shooting 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