We are currently building a home in Markham. As part of the process we needed new windows. We spoke to a number of window companies but eventually settled on Clera Windows working with Frank Altieri. From the moment we met him Frank was a pleasure to work with. He was responsive, respectful, polite on time, and was extremely knowledgeable on a topic area we knew nothing about. When we were not able to find a design of window that we liked, he helped us to custom design a set of windows that were exactly what we were looking for. The windows went in yesterday and they look amazing. We are extremely happy with Frank and Clera windows and would not hesitate to recommend them to friends or family. The windows are great, the service has been amazing as promised and the price was very fair. Thank you Frank!