Please refer to the following replacement methods: 1. Remove the plastic cover 2. Gently pull the carbon filter to remove it 3. Install new carbon filter 4. Install the plastic cover Function: adsorb volatile organic compounds Service life: 1140 hrs (60 days, cumulative printing time) Melt extrusion printers generate VOCs during printing because the heating temperature of materials such as ABS, PC, and PA is relatively high, resulting in higher VOC emissions. Materials like PLA with lower melting points produce significantly fewer VOCs. These VOCs are absorbed by the activated carbon air filter. Color: As shown Material: Activated carbon cotton Please note: Slight physical color variations may occur and do not affect usage. Package Contents: 2 x Air purifier filter Package includes only the items listed above; other products are not included. Note: Lighting reflections and differences in display screens may cause the color of the item in the image to vary slightly from the actual product. Measurement error allowance is +/- 1-3 cm.