Ok, so I know this thread is over 4 years old now, but when I did a Google search IC-2200H dash mount a few days ago, this is the first result that appears. That means that others who may be searching on ways to mount their 2200H or other mobiles are probably finding this thread as well.
I thought I would share my solution for dash mounting my IC-2200H. I followed the links in this thread and while there were a lot of good ideas on K0BG's website, none really fit what I was wanting to do...mount the IC-2200H in the factory DIN slot.
My specific vehicle is a 2002 F-150. The factory radio is a 1.5 DIN. My goal was to mount a new single DIN stereo along with my 'single DIN' IC-2200H. The results can be seen here... http://www.mfielectronics.com/DINAdapter.htm
It required performing all of the usual steps in mounting a double-DIN device in a factory 1.5 DIN Ford slot which can be found by searching the internet (i.e. cutting away parts of the plastic sub-dash, etc).
I had the "DIN adapters" CNC machined from billet aluminum, and a black anodized aluminum trim plate (not shown in the photos) to cover the gaps around the sides of the radio. I also installed a small, 12V cooling fan controlled by the ignition switch below the radio stack to keep air moving around the radio's heatsink. There is also a remote speaker mounted out of sight under the dash since the audio was somewhat muffled after the radio was installed behind the dash.
I am very happy with the results. The IC-2200H looks like it was factory installed! If anyone is interested in doing the same for this radio or others that are small enough to fit a 2 x 7 opening, please contact me via email.