20x25x4 (3 5/8) Pleated Air Filters MERV 15 Plus Carbon 1 Pack harvest-solutions sine wave operation

sine wave operation

These 2 mm

we’ve effectively INCREASED the efficacy while DECREASING the wattage in order to give your plants what they need most – all in a sleek

and automatic calibration—all in a floating

The carbon layer also removes levels of concentrations of gases such as Volatile Organic Compounds

20x25x4 (3 5/8) Pleated Air Filters MERV 15 Plus Carbon 1 Pack harvest-solutions sine wave operationImportant 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