20x25x4 (3 5/8) Pleated MERV 13 Air Filters 2 Pack Monterey Lawn & Garden Products this is the 3-part base

this is the 3-part base system for you

Packaging Dimensions - 31" x 21" x 9"

Stop breaking up floating nutrients and unclogging cheap sump pumps

Natural Volc

Rhizopogon amylopogon

20x25x4 (3 5/8) Pleated MERV 13 Air Filters 2 Pack Monterey Lawn & Garden Products this is the 3-part baseImportant 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