We needed to fully replace all home windows large executive style home constructed with builder style windows. 12 year old home with failing windows. Had quotes from 2 other companies in the $60k range but quality was the same as the builder windows. Renewal by Anderson were twice the price but incredible service and design. Used tempered glass to create massive single window in kitchen to replace a 4 section window. We had a double door walk out that was nothing but an energy waste with a draft all winter, provided us with a floor to ceiling picture window. So far wow I added before and after. Casement opening is very smooth. All and all very expensive but excellent quality.