20x25x4 (3 5/8) Pleated MERV 13 Air Filters 1 Pack beneficial microbes Increases brix levels resulting in

Increases brix levels resulting in a sweeter taste and aroma

Coco Nutrition Component B contains natural chelates

Fusarium sp

Each panel is constructed with premium aluminum alloy

Cfm/watt 23 [measured at full speed (750 rpm) @ 0

20x25x4 (3 5/8) Pleated MERV 13 Air Filters 1 Pack beneficial microbes Increases brix levels resulting inImportant 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