- The smart way to maintain clean air with a 2-stage filtration system: HEPA (HEPA 13) + activated carbon - Ensures hygienic indoor climate and high air quality - Ideal for allergy sufferers - All compatibility and technical details are listed below - This replacement filter easily installs into your air purifier for efficient performance - The combination filter includes a HEPA (HEPA 13) filter and an activated carbon filter - The HEPA filter captures fine particles such as dust, pollen, smoke, and nicotine - The activated carbon filter effectively neutralizes unpleasant odors, smoke, and fumes - High-quality construction ensures long service life - Simple and tool-free installation - Enjoy clean, fresh, and pollutant-free air anytime Package includes: 1 x Combination filter (HEPA 13 + activated carbon) Technical specifications: - Filter class: HEPA 13 - Diameter: 27 cm - Height: 36.6 cm - Material: Foam / plastic / filter paper - Color: White - Weight: 1641 g - Replacement interval: Every 2 years Compatible models: AC4236/10, Series 4000i Replaces original part numbers: FY4440/30, Nanoprotect S3 High-quality replacement parts and accessories designed for durability and long-lasting performance of your electronic devices