Lennox - 45ABF Merit Series - 45" Aluminum Bi-Fold Doors - Brushed Stainless - Used for Superior fireplace models: TM-4500, TM4500, TM 4500 for units that have had doors installed before. If your unit has never had doors before, or the track kit is broken, search for the combo kit for a better price. The kit is "86L68_67724"
