Gas burning artificial log assembly

A gas burning artificial log assembly includes an artificial log set, a gas burner and andirons for support of the artificial logs. Each of the artificial logs has a front face and a different rear face and can be reversed so as to change the appearance of the artificial log set. The faces of the logs can simulate different wood types or can have a partially-burned appearance. The artificial logs are shaped to define a combustion chamber that promotes complete gas combustion and provides a realistic-appearing gas flame. The gas burner includes a burner pan and a T-shaped manifold that define a pair of adjustable-width rear gas exit slots for producing a rear flame between the logs and further define a front gas exit slot for producing a front flame. The exit slots can be adjusted in width to insure complete combustion for different gas type such as propane and natural gas. The andirons, the gas burner and the artificial logs are keyed to insure proper alignment.