A cooling chamber (228; 328; 428) in a gas turbine engine, the cooling chamber comprising: a first side surface (242; 342), a second side surface (244; 344) opposing the first side surface, a bottom surface, and a top surface opposing the bottom surface, the surfaces defining a chamber therebetween, the second side surface angled at a first angle (α 1) with respect to the first side surface, the chamber having an inlet end and an exit (240, 340) located downstream of the inlet end, wherein the chamber has a width that narrows from the inlet end toward the exit; and an inlet (238; 338) located in one of the top surface or the bottom surface at the inlet end of the chamber; wherein a divider (248; 348a; 348b; 348c; 448) is located within the chamber, the divider dividing the chamber into a first flow path (250a, 350a) and a second flow path (250b, 350b), the first flow path separated from the second flow path by the divider such that an airflow flowing from the inlet to the exit is separated by the divider, wherein the divider extends in a direction from the inlet toward the exit, and the first flow path and the second flow path combine into a single flow path at a downstream end of the divider, wherein the divider is angled at a second angle (α 2) with respect to the first side surface, and the inlet (238; 338) is a first inlet, the cooling chamber further comprising a second inlet and a third inlet, the second inlet located adjacent the first inlet at the inlet end of the chamber, characterised in that: the divider (248; 348a) is located between the first inlet and the second inlet and an airflow from the first inlet provides air to the first flow path (250a, 350a) and the second inlet provides air to the second flow path (250b, 350b), and the third inlet located adjacent the second inlet at the inlet end, wherein the divider is located between the first inlet and the second inlet and a second divider is located between the second inlet and the third inlet. a first side surface (242; 342), a second side surface (244; 344) opposing the first side surface, a bottom surface, and a top surface opposing the bottom surface, the surfaces defining a chamber therebetween, the second side surface angled at a first angle (α 1) with respect to the first side surface, the chamber having an inlet end and an exit (240, 340) located downstream of the inlet end, wherein the chamber has a width that narrows from the inlet end toward the exit; and an inlet (238; 338) located in one of the top surface or the bottom surface at the inlet end of the chamber; wherein a divider (248; 348a; 348b; 348c; 448) is located within the chamber, the divider dividing the chamber into a first flow path (250a, 350a) and a second flow path (250b, 350b), the first flow path separated from the second flow path by the divider such that an airflow flowing from the inlet to the exit is separated by the divider, wherein the divider extends in a direction from the inlet toward the exit, and the first flow path and the second flow path combine into a single flow path at a downstream end of the divider, wherein the divider is angled at a second angle (α 2) with respect to the first side surface, and the inlet (238; 338) is a first inlet, the cooling chamber further comprising a second inlet and a third inlet, the second inlet located adjacent the first inlet at the inlet end of the chamber, characterised in that: the divider (248; 348a) is located between the first inlet and the second inlet and an airflow from the first inlet provides air to the first flow path (250a, 350a) and the second inlet provides air to the second flow path (250b, 350b), and the third inlet located adjacent the second inlet at the inlet end, wherein the divider is located between the first inlet and the second inlet and a second divider is located between the second inlet and the third inlet.