Here you can see the inside of the inlet air plenum. The six inch inlet and also air diverters to split the air between the upper and lower chambers. At the top corner of the plenum is an air diverter to ease the air around the corner. On the hot side in the corner air diverter I mounted the thermostat switch, which turns on at 110 degrees, and off at 90 degrees cycling the blower.
The panel is sitting on three 1/4" steel brackets towards the middle, and a piece of angle iron at the extreme left and right ends. The top and sides are attached to the house with four aluminum brackets and screws. also I purchased a few tubes of DAP clear silicone paintable caulking to use where the panel meets the house. The panel frame was mounted first, then the windows, then the aluminum on the outside.
Click on the chart below to see some temps from 01/09. It could probably make more heat in the late afternoon if the panel was tilted toward the south-west a bit more. As the sun arcs east to west there is some shade on parts of the panel due to those frames on the edges on the windows, but considering it was my first, built mostly from scrap, I am satisfied. As the sun's angle changed, I saw temperatures peak as high as 150 degrees from the end of January on.