I have been doing my research, ordering estimates from various companies. The majority was estimating production to be completed within 6-8 weeks. WINDOR gave me an estimated production time of 4 weeks. After I have reached out to them, someone came by on the same day. WINDOR guys are very friendly and professional. While completing their job, they were very careful- putting the drop sheets around the working area, cleaning up after themselves, vacuuming. I was pleasantly surprised by the complete and easy to understand information provided- the whole project was finished within a month. I will definitely use this company again to change the rest of my windows! Highly recommend!