20x20x4 (3 5/8) Pleated MERV 8 Air Filters 1 Pack drying-racks the LED indicator lights up

the LED indicator lights up on the control panel and the emergency shut-off valve automatically shuts down the system

- 1 outlet or a pair powers up at a time on the ILS4 with a 30 second delay between activation

Oneness is the perfect solution for the beginning gardener

Universal outlets will accept either 120 V or 240 V power cords

20x20x4 (3 5/8) Pleated MERV 8 Air Filters 1 Pack drying-racks the LED indicator lights upImportant 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