We would like to express our great appreciation for Keystone Home Construction Inc. Their work in our home has added security and comfort into our lower level. We had asked Michan to produce a unique window for us, incorporating our old rusty window’s style with a new, more secure window that could resist rust and could be painted to our custom color. It was no problem for their crew and thanks to their wonderful work and flexible approach in customizing the window to our needs, we now have high security, hand-leaded, fiberglass windows that look great (and have received many compliments.) My husband and I would recommend Keystone for even the most difficult of jobs. Their window choice is vast, prices were the best of all four of our estimates, and in fact, they were the only company that would produce the thickness that we requested for the lead that was to mimic the replaced windows. We are extremely happy with our windows.