General description These carbon fiber filters are designed for use with air purifiers AP-1009CH, AP-1008DH, AP-1012GH, and AP-4072DH. They effectively capture airborne particles, ensuring cleaner air in your environment. Technical specifications Color: Black + Green Material: Plastic + Cotton Package Contents: 2 x Primary Carbon Cotton, 2 x HEPA Filter Measurement allowed error: +/- 1-3 cm