20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 13 Air Filters 1 Pack Water Heaters Chillers When combined with Grow A

When combined with Grow A and B and Bloom B

Remote (detached) use of reflectors with Phantom ballasts from the 40 Series line should only be done with Hydrofarm brand reflectors having a built-in 15' cord

SPHNIX’s custom media blends remove 99

is multi-voltage capable (120/240V)

20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 13 Air Filters 1 Pack Water Heaters Chillers When combined with Grow AImportant 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,