What is the main purpose of the argon in the windows.
How do I really know, that its there after I told the
salesman that's what I want and paid for it.
What if I paid for something I didn't get...I see/touch/or feel
it, so I do I know I really got. and
Are most windows actually made to fit/custom. Salesman
make it sound like the high price you may paying for includes
a made to measure CUSTOM window.