Lennox X6667 - PureAir PCO-20C MERV 10 Replacement Filter 21" x 26" x 4"
Lennox X6669 - PureAir PCO-20C MERV 16 Replacement Filter 21" x 26" x 4"
Lennox X8345 - PureAir PCO-20C MERV 16 Upgrade Kit with Insert 21" x 26" x 4"
Lennox X8348 - Healthy Climate PCO-20C MERV 10 MAINT KIT W/INSRT 21" x 26" x 4"
Lennox X8344 - PureAir PCO-20C MERV 16 Upgrade Kit without Insert - 21" x 26" x 4"
Out of stock
Lennox Y4591 - 1st Generation to 2nd Generation Conversion Kit: Healthy Climate PCO-20C MERV 16 w/ Insert 21" x 26" x 4"
Out of stock
Lennox Y4593 - 1st Generation to 2nd Generation Conversion Kit: Healthy Climate PCO-20C MERV 10 MAINT KIT W/ INSRT 21" x 26" x 4"
Out of stock
Lennox Y4594 - 1st Generation to 2nd Generation Conversion Kit: Healthy Climate PCO-12C MERV 10 w/ Insert 17" x 26" x 4"
Out of stock