20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 10 Air Filters 4 Pack hydro-x For peace of mind

For peace of mind

and a combination of secondary micronutrients that plants need at various stages of growth

Dimming Settings: 600W-660W-750W-825W

As the meter is portable and does not need a power supply to operate

• Successful calibration indicator

20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 10 Air Filters 4 Pack hydro-x For peace of mindImportant 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,