20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 15 Air Filters 4 Pack Ventilation and with their warm 2000°

and with their warm 2000° Kelvin color temperature they consistently provide intense light in the correct spectral range for vigorous flowering growth

Displacement speed at 60Hz = 4

your grow is only as good as what you grow in

Each Fan | 120 x 120 x 25 mm ( 4

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 15 Air Filters 4 Pack Ventilation and with their warm 2000°Important 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,