This is an excellent company, honest and reliable. They deliver a superior product, on time and as promised, and they did a great job of installation to replace four old windows. The crew was courteous and professional and did a thorough clean-up after installation. I tried a number of companies and was dissatisfied with all of them until Sims was recommended, and I am very glad that I chose them. Also, you get a 10 year warranty on workmanship and installation as well as the windows themselves. I had one minor problem which they immediately took care of at no cost.