20x25x4 (3 5/8) Pleated Air Filters MERV 15 Plus Carbon 2 Pack Garden Accessories Bed knives can be inserted

Bed knives can be inserted blade-up to accommodate cleaning

Can I sharpen the blades

Is Garlic Barrier AG+ safe to use on edible crops

As light bulbs go

20x25x4 (3 5/8) Pleated Air Filters MERV 15 Plus Carbon 2 Pack Garden Accessories Bed knives can be insertedImportant 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