*PLUMBERSSTOCK EXPERT* responded:
Good day! No, it will not. According to this Specification Sheet, this Lennox 20490602 Natural Gas to LP Conversion Kit is used for the following gas furnace models: AF80MPA050B3, AF80MPA075B3, AF80MPA075B4, AF80MPA100B4, AF80MPA100B5, and AF80MPA125B5. The Lennox LB−62384DA is the LPG conversion kit for the Lennox G20 and is the one that you need. Please check page 1 of this Specification Sheet for reference. Uploading this Lennox LB-62384DA's information on PlumbersStock.com is an ongoing process but you can already place the order! Just have the product number ready and contact one of our customer service representatives at 435-868-4020 between 8:00 AM and 7:00 PM MT or through e-mail at firstname.lastname@example.org.