20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 12 Air Filters 4 Pack flowering This activity dramatically expands both

This activity dramatically expands both primary and secondary root development

the fans can be mounted in any direction

It comes with a 3-in-1 Temp/Humid/Photocell sensor

The HS-1 is the best way to control your dehumidifiers by eliminating the need to control the high-amperage / inrush current associated with dehumidifiers

20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 12 Air Filters 4 Pack flowering This activity dramatically expands bothImportant 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. We also carry 4 7 8 and 5 1 4 inch depth filters,