20x25x4 (3 5/8) Pleated MERV 7 Air Filters 6 Pack Pumps & Irrigation Improved performance

Improved performance

Reduces waste by allowing composting of substrate once the grow cycle is complete

High quality aluminum for excellent reflectivity

With the increasing problems of bacteria and diseases affecting plants

Includes 25' lineset

20x25x4 (3 5/8) Pleated MERV 7 Air Filters 6 Pack Pumps & Irrigation Improved performanceImportant 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