Beware. Used them last year with good results at a fair price. This year the gent on the phone wouldn't quote me a price: "I have to see what you paid last year." I should have known what was ahead: a whopping $370 bill for 18 windows. I called to complain. "I'm in the hospital," he said. "I can't talk to you now." I just re-counted our windows. 18? I count 12. I've called to ask for a refund.