20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 8 Air Filters 4 Pack AIR FILTER BOXES Outperforms any powder on the

Outperforms any powder on the market

A pliable nose clip allows for an adjustable

The pommel secures well and is watertight when fully secured

Natural plant food

This removes some of the honeydew secretions

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 8 Air Filters 4 Pack AIR FILTER BOXES Outperforms any powder on theImportant 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. We also carry 4 7 8 and 5 1 4 inch depth filters,