High-quality, new materials, well-made, durable and highly compatible with the equipment. Clean accessories keep your home robot performing at its best. Accessory contents are removed and replaced as part of routine maintenance. Also reduces the infiltration of dust, pollen and other allergens into the air you breathe. For best cleaning and filtering effect, cleaning accessories should be replaced every 2-3 months depending on the frequency of use. Compatible with for UNITS: CAP531-U, CAP529-U, HAP240, HAP242, HAP412, HAP422, HAP424, HAP702, HAP706, HAP716, HAP1702, HAP2400, HAP9240, HAP9241, HAP9242, HAP9243, HAP9412, HAP9413, HAP9414, HAP9415, HAP9422, HAP9423, HAP9424, HAP9425 CARBON FILTER: Absorbs household odors from pets, cooking, and smoking. And captures larger airborne pollutants such as hair and lint Type: Air Purifier Accessories Color: As shown Material: Plastic Package Contents: 4 * filter 8 * filter cotton 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 to be slightly different from the real thing. The allowed measurement error is +/- 1-3 cm.