20x25x5 (4 3/8) Lennox X6673_X6675 Replacement  MERV 8 Pleated Plus Carbon 4 Pack complete-systems Ship ETA is of 16th

Ship ETA is of 16th November

The active ingredient

square wave technology provides excellent current stability and consistency in output levels

Registered CDFA Organic Input Material

Active Aqua air stones are an ideal way to add oxygen to your hydroponic growing system

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement  MERV 8 Pleated Plus Carbon 4 Pack complete-systems Ship ETA is of 16thImportant 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,