An apparatus is described that includes an enclosure including a first sidewall, a second sidewall aligned parallel to the first sidewall, a front wall, a rear wall aligned parallel to the front wall, and at least one structure disposed between the front wall and the rear wall. The apparatus also includes a heat generating element within the enclosure, the heat generating element being mounted to a first surface of the at least one structure and a flexible sheet assembly configured to dissipate heat generated by the heat generating element away from the at least one heat generating element and across a lateral surface of the rear wall of the enclosure.