Friendly fit - 211+ + HEPA replacement filter is suitable for Blue Pure 211+ and MAX. applicable to BLUE PURE 211+ to Blue Pure 211, check your model carefully purchasing.2-stage filtration-211+ filters last 4-6 months.High quality 211+ filter effectiveThe quality is higher than others-the 2-stage filtration ensures that the design of this 211+ filter is durable.Easy to install-no complicated replacement steps are required. No additional tools are required. Replace and supplement the 211+ filter 3-6 months.colour: whiteMaterial: plasticSize: 510x296mmPackage Contents:1 x air purifier filter 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.