The MA-14 True Hepa Replacement Carbon Filter is a high-quality filter designed for indoor air quality improvement. With its True HEPA filtration technology and carbon filter media, it effectively captures airborne particles to provide clean and fresh air in your home or workspace. The pack includes 1 filter, specifically designed for the M14 model. This filter is essential for maintaining a healthy environment by removing allergens and pollutants from the air, making it a reliable choice for those looking to improve their indoor air quality.