Earl,
Here is their website.
http://www.thermalwindowsdfw.com/
The salesman I dealt with is Gary McClure.
Very interesting guy.He got to drive an orginal 289 Cobra in '65.
His Dad was a Regional VP at Ford.Gary was 15 when he drove it,already had 6 race cars.
phone 214-630-5885
fax 214-905-3805