20x25x4 (3 5/8) Pleated MERV 12 Air Filters 1 Pack bloom nutrients Day and night setpoints adjustable

Day and night setpoints adjustable from 20% to 90%

Power Draw - 480W

Storage Note: PFR-97 must be kept refrigerated for best results

USHIO introduces the new Super High Pressure Sodium Double Ended lamp to its HiLUX GRO lamp series

If you are using a recirculating system

20x25x4 (3 5/8) Pleated MERV 12 Air Filters 1 Pack bloom nutrients Day and night setpoints adjustableImportant 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. If you are replacing a 4 3 8 depth 20x25x4 filter