[Core 300 Replacement filter] Compatible with for core 300,core 300- and core 300s filter, fits well & cost less. [High Quality] including Nylon pre-filter, H13 Grade Hepa and High Efficiency Activated Carbon [H13 Ture Hepa] material removes up to 99.97% of particles as size as 0.3 Micrometre [High-Efficiency Activated carbon] absorbs odors, such as smoke, cooking smells and VOCs. [2 Packs]Easy to replace and install air purifier filter. Recommended replace the filter every 6-8 months. colour: as shown Material: Nylon + Plastic Package Contents: 2 x filters Only 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.