Air Filters

PerfectFit FiltersTM Next Generation Furnace Filters

After years of not specifying any specific filter, we have finally found one we can easily recommend.  Until now, almost all filters had their setbacks and to us, as long as there was a filter installed that didn't hurt the air handler/furnace by over-restricting the airflow, we were pretty much okay with it.

Best Living Systems has developed a new, patented approach to the common air filter – the "PerfectFit" Filter.  This anti-microbial treated, MERV 7, 90 day, no blow-by filter is the best replacement HVAC filter on the market today. 

There is no cardboard frame to warp or become a food source for mold and bacteria, no 20% blow-by allowing air the 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 airflow that will not strain your furnace fan.  Plus it has side-to-side flush edges to insure that all the air is filtered and treated.  This filter keeps your air conditioning system cleaner and reduces the possibility of mold and mildew growth on the duct system.


• MERV 7 ASHRAE rated standard
• Tri-Dek© anti-microbial treatment
• Internal frame eliminates paper cardboard
• Edge-to-edge design for PerfectFit
• Disposable every 90 days
• Easy to install, fits every time


• Provides adequate airflow with less restriction on HVAC system
• Eliminates bio-nesting of micro-organisms
• Eliminates blow-by so all the air is filtered
• Sturdy internal frame eliminates warping
• Standard sizes available

enlightenedFree Shipping on All Filter Sizesenlightened

*Standard sizes available at single pricing structure:

12×24 15×20 15×24 16×16
16×18 16×20 16×24 16×25
18×24 20×20 20×24  20×25
24×24 25×25    


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