20x20x4 (3 5/8) Pleated Air Filters MERV 7 Plus Carbon 2 Pack spl_fltrbuy 6 - Inner buckets

6 - Inner buckets

Pocket Sharpener Combo Ceramic/Tungsten Carbide

and 20-30 ml/gallon in the final 2-3 weeks

Comes in a package designed to keep air and light from damaging the solution

20x20x4 (3 5/8) Pleated Air Filters MERV 7 Plus Carbon 2 Pack spl_fltrbuy 6 - Inner bucketsImportant 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