Photo 1 of 2 Pack 411i Max & 411a Max Replacement Filters Compatible with Blueair Blue Pure F4MAX, 411i Max and 411a Max Air Cleaner Purifier, Carbon Replacement Filter,Not fits for 411, 411+ and 411 Auto

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Photo 1 of 2 Pack 411i Max & 411a Max Replacement Filters Compatible with Blueair Blue Pure F4MAX, 411i Max and 411a Max Air Cleaner Purifier, Carbon Replacement Filter,Not fits for 411, 411+ and 411 Auto