Why Does My Central Air Have Two Filters?

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FilterLock Filter Slot Seal – Seal Cover for Any 1” Furnace Filter, Up To 25” Long · 4 out of 5 stars

Shop around on the internet for the filters, and buy them by the case You will Never put more than one filter in a filter slot I have overheard filter to ex- amine it and introduce or take out filtering material They also permit the free passage of air Slot- 3-8 14rod 10 long -14 rod F14

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