20x25x4 (3 5/8) Pleated MERV 10 Air Filters 6 Pack Light Movers Hangers It has a male and

It has a male and female end and can extend the distance between AMP-2 sensor board and the main controller

In-line pH

It cannot be used or connected to any other Bluelab product

a removable screened inlet and a sturdy

20x25x4 (3 5/8) Pleated MERV 10 Air Filters 6 Pack Light Movers Hangers It has a male andImportant 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