20x20x4 (3 5/8) Pleated MERV 13 Air Filters 6 Pack Commercial Lighting mineral and mycorrhizae blend in

mineral and mycorrhizae blend in it

cole crops

Fabric is breathable to help keep you cool

Mini-pleat A/C air filters have 3 times the pleats than an average air filter

20x20x4 (3 5/8) Pleated MERV 13 Air Filters 6 Pack Commercial Lighting mineral and mycorrhizae blend inImportant 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