Function: efficient dust removal, pm2.5, bacterial, efficient formaldehyde additive, suitable for new home decoration Replacing the spare parts in time will help the air purifier maintain good cleaning performance. Each set of spare parts is recommended to use for six months and then replace the new spare part .Type: Air Purifier Parts Version: Standard Version Product Shape: 360 Degree Barrel Filter Recommended Area: Recommended Area: 28m-49m Color: Blue Material: Composite Material Size: 200x290mm Package Contents: 1 * Air Purifier Filter Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the photo a little different from the real thing. The measurement error is +/- 1-3cm.