20x20x4 (3 5/8) Pleated MERV 15 Air Filters 6 Pack king including the production of ATP

including the production of ATP (plant sugars) and the transfer of those sugars throughout the plant tissue

The air conditioner filter media will not support the growth of mold or bacteria

Then slide the ends of your tying material through the cutter

Roots Organics potting soil encourages healthier plants and better yields

Pura Vida Grow & Bloom are each ideal as a ONE-PART fertilizer for general use

20x20x4 (3 5/8) Pleated MERV 15 Air Filters 6 Pack king including the production of ATPImportant 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