20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 10 Air Filters 1 Pack -power-&-lamp-cords HI98129 Shown Above

HI98129 Shown Above

or a lighting controller such as the APT0082

PHRW010 Reflector: Hydrofarm engaged a renowned American lighting engineer to design the most efficient DE open reflector on the market

What warranty does the HLG BlackBird come with

Mix 1-2ml per gallon of water in a weekly mix

20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 10 Air Filters 1 Pack -power-&-lamp-cords HI98129 Shown AboveImportant 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,