16x20x4 (3 5/8) Pleated MERV 12 Air Filters 2 Pack growing-media Color Temp / CRI 5500

Color Temp / CRI 5500 /75 K/CRI

The nymphs are also transparent and difficult to see without a microscope

24"-36" for seedling

A low-linting

Use as a nutrient or supplement during the vegetative stage of plant growth

16x20x4 (3 5/8) Pleated MERV 12 Air Filters 2 Pack growing-media Color Temp / CRI 5500Important 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 16x20x4 filter