BLS12K Replacement Filters 3 Year Supply (24 filters) Each filter is a 90 day filter and there are two needed per BLS12K Stand Alone Air Purifier Merv 7 No blow-by allowed Organic, no cardboard used May be used with the GT1500 also.

This anti-microbial treated, MERV 7, 90 day, no blow-by filter by Best Living Systems is the best replacement filter on the market today. There is no cardboard frame to warp or become a food source for mold and bacteria, no blow-by allowing air to go untreated and unfiltered, and no replacement for three months or more in clean environments. The unique design of the BLS PerfectFit provides an internal frame sandwiched between two layers of anti-microbial treated MERV 7 media allowing free...