20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 13 Air Filters 4 Pack trays Enhance uniformity by independent control

Enhance uniformity by independent control over perimeter versus interior of the environment

cultured for its ability to aid each plant in reaching its full GENETIC POTENTIAL

On up to 30 min / Off up to 60 min

Hydropolis Grow Tents have taken the best features from the tents in the market today and applied years of experience to innovate and raise the bar

It has a flow rate of 0

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 13 Air Filters 4 Pack trays Enhance uniformity by independent controlImportant 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,