20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 10 Air Filters 1 Pack spl_nextlight Supports Terpene and Resin Production

Supports Terpene and Resin Production

100% Soluble

full-size dimensions and volume to provide maximum growing area

Developed to detect the presence of CO2 and to monitor temperature & relative humidity in ambient air

C Hydroponic Nutrients bring a balance of nutrients in proper form

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 10 Air Filters 1 Pack spl_nextlight Supports Terpene and Resin ProductionImportant 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,