The thermal management plate 124 and the thermal curtain 125 can be used to separate the interior space of the cabinet 10 into different zones by forming baffles to the air flow and heat transfer. A cold zone can be defined within the front service area 121, bounded at the rear by the electronic components that are stored within the racks and at the top by the thermal management plate 124. The front door, the sides 112 and the bottom of the cabinet 10 can form the other boundaries of the cold zone. A hot zone can be defined within the rear service area 122, bounded at the front by the electronic components that are stored within the racks and by the thermal curtain 125 that extends from the top of the cabinet 10 to the thermal management plate 124. The sides 112, the rear door, the bottom and the top of the cabinet 10 can form the other boundaries of the hot zone. A neutral heat zone can be formed above the cold zone, defined between the top of the cabinet 10, the thermal management plate 124, the sides 112 of the cabinet, the front door of the cabinet 10 and the thermal curtain 125. Thus, the hot zone typically forms the entire volume of the rear service area 122, while the front service area 121 and the electronic component storage area 120 can be split vertically by the horizontally-oriented plate 124 into the neutral heat zone at the top and the cold zone at the bottom.