20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 13 Air Filters 4 Pack dis and dust mites

and dust mites

Less difficult to overwater crops

This ballast's constant wattage output means no lamp flickering and with the flip of a switch it can be converted from MH to HPS ballasts

Flange and pre-filter included

20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 13 Air Filters 4 Pack dis and dust mitesImportant 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,