- the clever way Air filter for your air purifier with 2-stage filtration system: HEPA (HEPA 13) + activated carbon For hygienic indoor climate and high air quality Ideal for allergy sufferers All compatibility and technical details can be found below This filter quickly and easily replaces the filter in your air purifier, ensuring highly efficient filtration performance. The combination filter consists of a HEPA (HEPA 13) filter and an activated carbon filter. The HEPA filter removes fine particles such as dust, pollen, smoke, and nicotine from the air. The activated carbon filter efficiently neutralizes unpleasant odors, smoke, and fumes. Our filters are made of high-quality materials designed for a long service life and are easy to install. Enjoy clean, fresh, and pollutant-free air anytime. Package includes: 1 x Combination filter HEPA (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 cycle: every 2 years Compatible with the following models: Philips AC4236/10, Series 4000i Replaces the following original parts: Philips FY4440/30, Nanoprotect S3 High-quality replacement parts and accessories for long-lasting performance of your electrical devices.