2-pack R1 P1801 Replacement Filters for YIOU R1 Air Purifier and Elechomes P1801/P1802 Air Purifiers This replacement filter uses a 3-stage filtration system consisting of a pre-filter, an H13 True HEPA filter, and an activated carbon filter. It is designed for easy, tool-free replacement. Compatibility - Compatible with YIOU R1 Air Purifier. - Compatible with Elechomes P1801 and Elechomes P1802 Air Purifiers. What you get - 2 replacement filters in the package. Filtration and performance - 3-stage filtration: pre-filter traps larger particles, H13 True HEPA filter captures fine particles, activated carbon filter reduces odors and VOCs. - H13 True HEPA provides high efficiency for common indoor allergens and particulates. - Activated carbon targets odors from cooking, pets, smoke, and other sources. Replacement and maintenance - Replacement is tool-free and straightforward, allowing quick maintenance to keep your purifier operating at peak performance. Use scenarios - In a bedroom to help reduce dust, pollen, and pet dander for a better night’s sleep. - In a living room or family room with pets to minimize pet odors and airborne particles. - In a kitchen or dining area to reduce cooking smells and smoke from everyday activities. Key attributes - Model compatibility: YIOU R1, Elechomes P1801, Elechomes P1802. - Filter type: 3-stage (pre-filter, H13 True HEPA, activated carbon). - Package quantity: 2 filters per pack.