20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 14 Air Filters 1 Pack Hand Tools • During the vegetative stage

• During the vegetative stage start with a lower pH (5

There is no recirculation of contaminates in the room regardless of HEPA filtration and HVAC negative pressure inconsistencies

OMRI Listed Sluggo Plus kills insects

When this occurs

SHUT DOWN warning with LED error indicator lights

20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 14 Air Filters 1 Pack Hand Tools • During the vegetative stageImportant 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,