20x20x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon 1 Pack HPS and corded 6-ft power plug

and corded 6-ft power plug cord

Cocogro has excellent drainage properties and can be used over a longer period of time than coir fiber with shorter fibers

This Bluetooth enabled electrode turns your Apple or Android device into a full-featured portable pH meter

Always add fresh clean water to the reservoir first

20x20x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon 1 Pack HPS and corded 6-ft power plugImportant 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