20x20x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon 1 Pack HPS The Model-V is a high

The Model-V is a high performance LED grow light for horticulture cultivation

Improves tolerance to stressors like drought

a very capable supplemental light in large flower operations and the power to act as the main source offering a full spectrum in a small garden

Protecting drip irrigation systems from sediment

Potassium is a major component in photosynthetic processes

20x20x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon 1 Pack HPS The Model-V is a highImportant 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