Figure 4 illustrates the front of the cooler, which is covered by the 135 mm fan. Notice that the blades of the fan are not plain; they have ripples that help minimize the turbulence and, thus, the noise.

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Figure 4: Front view

Figure 5 reveals the side of the cooler.

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Figure 5: Side view

Figure 6 shows the rear of the cooler. The edges of the fins are straight, creating a flat surface.

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Figure 6: Rear view

In Figure 7, you can see the top of the cooler.

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Figure 7: Top view