20x25x5 (4 3/8) Lennox X6673_X6675 Replacement Air Filters MERV 14 Plus Carbon 2 Pack Fertilizer The PhotonTek Digital Lighting Controller

The PhotonTek Digital Lighting Controller is a full-control LED fixture master panel

Daisy chain capable: 6

Compatible with all growing mediums & systems

Read up to 5000 footcandles of sun

Do not use at full strength to avoid deterioration of equipment components

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement Air Filters MERV 14 Plus Carbon 2 Pack Fertilizer The PhotonTek Digital Lighting ControllerImportant 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,