Features: The filter is changed every 3 months and the HEPA filter helps to increase efficiency. Winix air purifiers improve the air quality of the house. It can filter micron-level dust to prevent secondary pollution and can be removed and cleaned separately. Activated carbon filters remove a variety of home odors and leave a healthy environment for your children and families to help reduce these particles. Fit for Winix 115115 compatible with 5300 6300 5300-2 6300-2 P300 C535 and other air purifiers. Specification: Item Type: Filter Net Material: ABS Color: White+Black Filter Size: Approx. 41*32*3.2cm / 16.1*12.6*1.3inch Activated carbon size: 41*31.6cm / 16.1*12.4inch Fitment: Fit for Winix 115115 compatible with 5300 6300 5300-2 6300-2 P300 C535 Package list: 1 x Hepa Filter 4 x Carbon Prefilters Notes: 1. The actual product color may deviate from the photo due to light. 2. There may be a slight deviation in the measurement of product.