16x20x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon 2 Pack Water Treatment Patent-Pending dual impeller design pumps

Patent-Pending dual impeller design pumps water on one end and generates oxygen on the other

optimized root growth

The Zenport Z225 bypass pruner features a rotating handle design that keeps your hand in a comfortable position when cutting at any angle or for extended periods of time

without any harmful or dangerous chemicals

16x20x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon 2 Pack Water Treatment Patent-Pending dual impeller design pumpsImportant 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 16x20x4 filter