Abstract: A gas oven having a broil burner recessed up into a chamber above the ceiling to provide more usable space in the oven cavity. A partition closely above or extending from the sides of the burner forms an upper chamber duct which extends from an exhaust flue at the rear to a passageway to the cavity at the front of the chamber. The products of combustion from the burner flow forwardly in lateral troughs to the passageway where they mix with other cavity vapors and then rearwardly in the duct to the exhaust flue. The duct functions to reduce the body temperature of the burner to prevent flashback and also enhances stack action.