20x25x5 (4 3/8) Lennox X6673_X6675 Replacement  MERV 8 Pleated Plus Carbon 2 Pack Light Fixture Pyur Scientific ISO 99

Pyur Scientific ISO 99

effective way to repel pests without harsh chemicals

It includes a 12-foot sensor probe with a waterproof thermalloy head that accurately detects current temperature and humidity conditions

For use in soilless

spray every 5-7 days

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement  MERV 8 Pleated Plus Carbon 2 Pack Light Fixture Pyur Scientific ISO 99Important 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,