16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 13 Air Filters 1 Pack pumps-&-irrigation The exclusive EYE HORTILUX DE

The exclusive EYE HORTILUX DE spectrum provides 1950 μmol/s of photosynthetic photon flux (PPF) when operated at 1000W and 2100 μmol/s when operated at 1150W

A continuous shower of CO2 directly onto your plants is the most efficient way to deliver CO2

and easy to fill

This powerful formulation delivers a stable

non-condensing

16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 13 Air Filters 1 Pack pumps-&-irrigation The exclusive EYE HORTILUX DEImportant 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,