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polypropylene lab coats help protect you from dirt
Being proactive
Recommended for INDOOR use
Ionic PK Boost is designed to work with Ionic Bloom and IonicBloom Hardwater
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20x20x4 (3 5/8) Pleated MERV 14 Air Filters 6 Pack Terp Derp polypropylene lab coats help protectImportant Note: Almost ALL furnace filters have a different "actual size" than the nominal size printed on the air conditioner filter. It's best if you measure your air filter for the EXACT size and compare it to our "Actual Size" and then you can be sure your A C air filter fits! With the 4" and 5" air filters there is a wider variance between the nominal and actual size depending on the manufacturer. If you are replacing a 4 3 8 depth 20x20x4 filter
