20x20x4 (3 5/8) Furnace Air Filters MERV 10 Pleated Plus Carbon 6 Pack rock-bottom dry place away from direct

dry place away from direct sunlight

5" rubber reducer with clamps included

It can be used on most plants to control all life stages of common garden pests insects and mites – egg

We've incorporated DYNOMYCO® into every transplant cycle and the difference in early establishment is clear

and vegetables in all stages of growth with Grow1 Trellis Netting

20x20x4 (3 5/8) Furnace Air Filters MERV 10 Pleated Plus Carbon 6 Pack rock-bottom dry place away from directImportant 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