16x20x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 12 Pleated Plus Carbon 2 Pack lighting_accessories consider the local quality of

consider the local quality of water when cultivating your growing area

chemical loading

Check Valve

ARBICO's Good Bug Power Meal provides an artificial diet for the adults and contains necessary nutrients for reproduction

Heat-treated HSS with titanium nitride coating

16x20x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 12 Pleated Plus Carbon 2 Pack lighting_accessories consider the local quality ofImportant 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,