16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 12 Air Filters 2 Pack dupe No other T5 bulb on

No other T5 bulb on the market produces a spectrum with this quality or UV of any kind

inline shut-off

Replacement bulb for C

Heavy releases – 500 adults per whitefly "hot spot"

CO2 injection

16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 12 Air Filters 2 Pack dupe No other T5 bulb onImportant 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,