I did my own fan test and posted the details here: http://www.surfaceforums.net/threads/microsoft-about-heat-issue.10778/#post-80551
Here is a picture of the Cooler Master 15 inch Ergo Lite Stand with adjustable fan with type cover 3
http://www.amazon.com/Cooler-Master-NotePal-ErgoStand-Lite/dp/B00EQV0VRG/ref=sr_1_2?ie=UTF8&qid=1409226428&sr=8-2&keywords=cooler master pad