20x20x4 (3 5/8) Pleated MERV 14 Air Filters 1 Pack pumps-and-irrigation-supplies the concentrate is mixed with

the concentrate is mixed with the water

Safer™ Brand 3-In-1 Concentrate is designed to kill pests and create an environment where damaging fungi cannot live

Clean your grow room

This enables active temperature monitoring as well as intelligent programming that will automatically adjust fan speeds to respond to varying temperatures for each zone

Drying Rack Specs:

20x20x4 (3 5/8) Pleated MERV 14 Air Filters 1 Pack pumps-and-irrigation-supplies the concentrate is mixed withImportant 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