Patio door replacement
We have an old patio door that needs to be replaced - it is probably 50 yrs old, and single glass windows. It is a 3-panel installation, total opening aprox. 12 ft. wide. It is a sliding glass door. We live in northern IL, and this sub-zero winter has reinforced the need to replace.
I have gotten three quotes, and would like to know if the prices (including installation) are appropriate, and thoughts on the brands.