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• Outstanding Efficiency at a true 2
Advanced membrane technology and manufacturing processes ensure superior quality and unmatchable performance
which in turn will increase fertility of the soil by forming humus
Most air filters utilize 65% of the carbon available by only filtering through the top section of the carbon filter
20x20x4 (3 5/8) Pleated MERV 7 Air Filters 1 Pack spl_hi • Outstanding Efficiency at aImportant 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
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