20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 14 Air Filters 2 Pack rockwool Since lacewing larvae are the

Since lacewing larvae are the predatory stage

safer water

Hanna suggests cleaning the bulb and junction of your electrode on a regular basis to ensure that the probe is always clean and prevent any clogging of the junction

The most unique grow lamp available

20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 14 Air Filters 2 Pack rockwool Since lacewing larvae are theImportant 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,