Keep your vacuum cleaner at its best performance! Our maintenance kit can meet all your needs, including HEPA filters The filter can fine dust with a diameter of 0.3 micrometres or larger, effectively filtering pet hair, dust and other pollutants. For best results, the filter should be replaced every 2-3 months. This project is suitable for DX115 DX115S DX115C portable vacuum cleaner As part of routine maintenance, it can be easily removed and replaced.