I initially contacted Westeck Windows because of their reputation for above industry standard energy ratings, but was happy to learn about the many other things that set them apart from their competition: the positive action locks, which automatically lock when the window is closed, giving me complete peace of mind that my kids are safe, their warm edge super spacer which is amazing at preventing condensation on our windows, their innovative pocket cover windows which cover the tracks so cleaning them is as easy as a wipe of the sill, and finally they have special screens that are the most transparent in the industry and they do not cost more! Also, I was met with warm and helpful staff and a professional attitude. I have and would highly recommend them!