Here is a link to Lennox’s model numbering system.
http://www.lennox.com/pdfs/Lennox%20Model%20and%20Serial%20Nomenclature.pdf
Here is a link to Lennox’s model numbering system.
http://www.lennox.com/pdfs/Lennox%20Model%20and%20Serial%20Nomenclature.pdf
Thanks, Gary; good info.