Here is a picture of what the units look like.

They are made of a clear plastic "duct". Angled for optimum
performance. 

Here are the numbers I came up with BEFORE I installed the units.

This is system at idle

This is the system after running several tests (Winbench2000, 3dmark2000 and
playing Quake 3 total time approx. 2 hours)

As you can see, my temps are in the operating range, but could be better.

Here is the pc w/case open, I as you can see, I had to "adjust"
some wires to make room, not a difficult task at all…

And here is the unit inside my pc case. Easy fit although the isa modem at the
bottom made it tight, but it went in. The design of the units is very good, the
angles for the flow of air is excellent. As you can see, the output is directed
towards the video card and cpu.