20x20x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon 2 Pack aaron and OMRI Listed®

and OMRI Listed®

COVERAGE: One container will cover approximately 2

Coco Nutrition Component B contains natural chelates

Chemboys Ph Up MAX is the Strongest Liquid pH UP on the Market

• Amplifies flower size

20x20x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon 2 Pack aaron and OMRI Listed®Important 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