20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 14 Plus Carbon 1 Pack hydro-x 23 @ 120 Volt

23 @ 120 Volt

5 gallon reservoir

These 60-degree angled stakes provide smoother water delivery from the attached tubing than other stakes

automatic shut-off

How do I know when to replace the filter

20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 14 Plus Carbon 1 Pack hydro-x 23 @ 120 VoltImportant 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,