Material Acrylonitrile butadiene styrene (ABS), HEPA, Activated carbon Compatible with Philips 1000i Series: Replacement HEPA filter and activated carbon, suitable for Philips 4000i Series AC4236/10 Air Purifiers. Part Number FY4440/30. HEPA H13 And Activated Carbon Filter: Filters 99.5% of particles as small as 0.003 microns, such as dust, bacteria, viruses, pollen and mites, greatly improving the efficiency of the air purifier. Easy to install: The size of the filter is 35.6*25.5*25.5cm, which perfectly fits the original air filter and is easy to install. During installation, remove the new filter from the plastic bag and insert it. Long life: The replaced filter is durable and has a long service life. It is generally recommended to replace the filter every 12-18 months to maintain optim.
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