100% new high qualityMade of high quality materials for durabilityIt is best to replace the spare parts every 2 to 3 months to keep your sweeping robot running at performance.[filter screen replacement] replace the filter screen, start up the machine, reset the purifier, and then it can work normally[applicable model] ac4004, other models can check the size, the same size can be general[product name] filter screen of purifier[filter model] Purple AC4121, black AC4123, white AC4124[product size]:Ac4124 size: 317 * 291 * 18mmColor: WhiteMaterial: ABSPackage Contents:1 * Filter elementsOnly 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.