Function: efficient dust removal, PM2.5,bacterial,Efficient addition of formaldehyde, suitable for new home decoration The replacement of the spare parts on time will help your Air Purifier maintain the good cleaning performance. Each set of spare parts is recommended to use for six months, and then replace the new part spare. Type: Air Purifier Parts Version: Standard Edition Product Shape: 360-Degree Barrel Filter Recommended area:Recommended area: 28 m-49 m Colour:Blue/Purple/Green Material:Composite material Size:200x290mm Package Contents: 1* air purifier filterOnly the above package content, other products are not included.Note: Light shooting 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.