Philips FY6171/30 NanoProtect Active Carbon Filter - for Philips Air Purifier Series 6000

Philips NanoProtect AC Filter for Air Purifier Series 6000 - Breathe the difference. Double performance, double reassurance. Double-deck of filters provides double performance. Double-deck of filters provides doubled performance. Impregnated carbon process in Japan. Mixed active carbon for the purpose of various gases removal with Japan technology inside: 50percent coal cokes based active carbon (CC-AC), 50percent coconut shell-based active carbon and Impregnated carbon process in Japan, targets various gases removal rather than 1 gas type: Coconut palm-based AC is consist of Micropore, which is good for removing gas with small molecular, but coal-based AC is consist of Meso pore, good for gas having big molecular.