20x25x5 (4 3/8) Lennox X6673_X6675 Replacement  MERV 8 Pleated Plus Carbon 4 Pack additives to closely simulate natural outdoor

to closely simulate natural outdoor conditions

Available in 100’ and 200’ rolls

Dilution Solutions Pressure Regulator with Gauge – 3/4 in FPT x FPT (PR34)

The entire process takes only 15 minutes

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement  MERV 8 Pleated Plus Carbon 4 Pack additives to closely simulate natural outdoorImportant 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,