Review on π¬οΈ Enhance Indoor Air Quality with AIRx HEALTH 18X20X1 Pleated Filter by William Mathis
Size not exact
I bought this for my AC air filter which is 36x20. I couldn't find a MERV 13 this size at local hardware stores. So I ordered 6 packs of 18x20. So I can put two of them. But the filter size is smaller than 18x20, so when I used two, it's an inch shorter, it can't fit in the AC unit filter. description below.
- Furnace filter
- Large and bulky
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