Fresh air: These are HEPA air filter replacement parts, with a dual filter design. They can remove 99.97% of pollen, mold, pet hazards, dust, odors and smoke particles as small as 0.3 Micrometre. Perfect fit: 3 Advanced HEPA R replacement filter elements set is compatible with filter elements R HRF-R3 HRF-R2 HRF-R1, compatible with air purifier series HPA090, HPA100, HPA200, HPA250 and HPA300 Very suitable for home or office use: Whether you are looking for replacement filter elements for your home or office air purifier, these filter elements can provide you with excellent service. They are very suitable for home use in offices, pets, smokers, allergy or asthma patients. for money: You can get 3 high-quality replacement HEPA filters for every product you buy at an affordable price. They are as good as part number filters, so there is no need to worry about buying new replacement parts within a few months. Provide excellent filtered water at any time! Drink fresh and clean water in the gym, office, school or when going out colour:white Material:Composite material size:26x16.5x4cm Package Contents: 3 x hepa filter Only the above package content, other products are not included. Note: Light 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.