An air baffle insertable between a chassis wall and a computer component such as a GPU and heat sink mounted on a GPU tray to divert air flow to the computer component is disclosed. The air baffle includes a single sheet having a bottom panel, a top panel, and a pair of parallel side walls. Each of the parallel side walls are connected to the bottom and top panels. A first end wall is joined to the side walls and the top and bottom panel. The first end wall directs air flow toward the computer component.