General description 100% brand new and high quality HEPA filter replacement designed for Roborock models S7, S7+, S7 Max Ultra, S8 Pro Ultra, S8+, S8, S7MaxV, S7 MaxV Plus, T7S, T7 Plus, and T7S Plus. Made of high-quality materials, this filter effectively captures fine dust, preventing dust, pollen, and other allergens from entering the air you breathe. It is recommended to replace the filter every 2 to 3 months to maintain optimal performance. Technical specifications Material: Plastic Package Contents: 10 HEPA Filters, 1 Clean Brush Measurement allowed error: +/- 1-3 cm Compatibility and accessories Compatible with: S7, S7+, S7 Max Ultra, S8 Pro Ultra, S8+, S8, S7MaxV, S7 MaxV Plus, T7S, T7 Plus, T7S Plus Includes: 10 HEPA Filters, 1 Clean Brush Installation Easy to remove and replace as part of normal maintenance