20x20x4 (3 5/8) Pleated MERV 8 Air Filters 6 Pack Drying Racks This product will not tear

This product will not tear easily like other mylars

BX  BIOFUNGICIDE + MYCORRHIZAE - general purpose

effectively stopping the spread of mildew upon application

It goes to work quickly and has all the essentials to promote prolific blooming and ripening of all fruits

20x20x4 (3 5/8) Pleated MERV 8 Air Filters 6 Pack Drying Racks This product will not tearImportant 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