20x20x4 (3 5/8) Pleated MERV 8 Air Filters 2 Pack Sea Green Hydro These nematodes perform well in

These nematodes perform well in indoor grow environments

Main Features

5" X 20'' SF-4520-SP Replacement Spun Sediment Filter for EX600-T

Gypsy Moths

20x20x4 (3 5/8) Pleated MERV 8 Air Filters 2 Pack Sea Green Hydro These nematodes perform well inImportant 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