20x25x4 (3 5/8) Pleated MERV 13 Air Filters 6 Pack pumps-&-irrigation The Controller is very simple—a

The Controller is very simple—a container with a float valve is connected to the line of units

The Trichoderma strains in RootShield Plus help eliminate fungal pathogens by colonizing the root systems of plants

For a more detailed listing and crop/pest specific application rates please refer to the manufacturer's label under the DOCS tab

Auto resume dosing on restart after power loss

Use it instead of a box full of pluggable relays

20x25x4 (3 5/8) Pleated MERV 13 Air Filters 6 Pack pumps-&-irrigation The Controller is very simple—aImportant 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 20x25x4 filter