Carbon Filter X2678 Lennox:
Lennox X2678 is the correct replacement carbon filter for the following air cleaner models:
Lennox HEPA 20
ONLY: $39.77 each - FREE SHIPPING When You Order Two or More
Carbon Filter X4137 Lennox:
Lennox X4137 is the correct replacement pre-filter for the following systems:
Lennox Healthy Climate HEPA 20
ONLY: $46.87 each - FREE SHIPPING When You Order Two or More