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The last furnace filter you'll ever have to buy - pays for itself over and over again!Tired of shelling out money for boxes of furnace filters? Then save big by picking up this Web Plus electrostatic filter.
It effectively traps 91% of pollen, dust and dander-sized particles from .3-10 microns for cleaner indoor air. And when it gets dirty, simply rinse it off and reuse - no replacement parts required! Adjusts to fit 1" filter openings from 14" x 20" to 20" x 25". MERV 8 rating. Limited lifetime warranty.