The installers Jeff and Nick, did a great job installing our windows and patio doors. Would recommends these guys anytime. Willing to work in all kinds of weather conditions. Ha Ha. Cruelest cold snap in January we had, but they put on a brave face. Took on the challenge. And got the job done with a very high degree of accuracy and precision Thank's to Centennial, job well done. Suppose to be warmer next week..