HyperHEPA Technology Captures Ultra-Fine Particles with High Efficiency A set of four post-filter sleeves (F3) is used to control fine and ultra-fine particulate matter. The media type is electrostatically charged fiber, covering a surface area of 0.5 m². The average filter life is approximately 2 years & 4 months (based on average daily usage of 10h on speed 3). Suitable for all IQAir GC models. Shows as "F3" on GC model display panel. Guide to replacing/resetting filters - CLICK HERE
