Compatible with Tineco A10 Hero/Master and A11 Hero/Master. Captures 99.97% of particles as small as 0.3 micrometers, including dust, hair, and cotton wool, to help protect the machine for longer use. Washable and reusable: These filters can be washed under running water and must be completely dry before reinstalling. Recommended replacement: Pre-filter every 3–4 months, HEPA filter every 6 months (replacement time may vary based on usage and environment). This is a consumable item; we recommend replacing it regularly. Color: As shown. Material: Plastic. Package Contents: 2 x Pre-Filters, 2 x HEPA Filters. Only the items listed are included; other products are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error allowance: +/- 1–3 cm.