3-Stage Filtration: LV-H128 replacement filter has a three-stage filter design. The first layer of the pre-filter filters out large particles such as animal hair and fur. The second H13 HEPA filter reduces 99.97% of dust, PM2.5 and dirt in the air. The third layer of activated carbon filters removes unpleasant odors. Comfortable and safe environment for children and family Replacement cycle: Using a new filter can improve the performance of the air purifier, thus ensuring fresh and safe indoor air. It is recommended to replace the lv-h128 h13 filter every 6 months. Material: HEPA + sponge Color as shown Easy installation: get fresh air in just a few steps 1. Remove the filter cover 2. Unpack the new LV-1283 filter. Place the filters in the air purifier4. Replace Filter Cover Package Contents: 2 x Filter Only 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 error is +/- 1-3cm. Shipping Time: We can ship all products within 5~8 business days