20x20x4 (3 5/8) Pleated Air Filters MERV 7 Plus Carbon 1 Pack veg nutrients Digital temperature control

Digital temperature control

painted with a matte-white finish

63 x PotPro™ | Link x 2ft (unit)

high performance output for thousands of hours

If you want to make a difference in the world

20x20x4 (3 5/8) Pleated Air Filters MERV 7 Plus Carbon 1 Pack veg nutrients Digital temperature controlImportant 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 20x20x4 filter