100% brand new and high qualityMade of high-quality materials, more durableThe filter can reduce dust, pollen and other allergens from entering the you breathe, which is good to your health.The purifier filter is easy to install and replace, easy to use, and very convenient for your use.For better using results, the filter should be replaced every 23 months, in order to provide condition.Compatible with model: Item for Core 300 Core 300RF Purifier.color:YellowMaterial:plasticPackage Contents:1 x air filter1 x clean brushOnly 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.