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Fixes atmospheric nitrogen turning it into plant-usable nitrogen compounds
-Easy to manipulate
Mounts horizontally or vertically to prevent backflow and debris from entering ducting
reclosable stand up bag
20x25x4 (3 5/8) Pleated Air Filters MERV 7 Plus Carbon 2 Pack rock-bottom Fixes atmospheric nitrogen turning itImportant 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 20x25x4 filter
