20x20x4 (3 5/8) Pleated MERV 15 Air Filters 6 Pack pumps-and-irrigation-supplies Blow your production record through

Blow your production record through the roof

Trellis expands to over 4 feet tall and snaps together

our bags have an excellent aroma barrier

and then allow the water to be absorbed

20x20x4 (3 5/8) Pleated MERV 15 Air Filters 6 Pack pumps-and-irrigation-supplies Blow your production record throughImportant 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