One mistake many people make is buying a stock size replacement window off the shelf. With a new construction window you are making the opening to fit the size of window. If you are replacing existing windows, they need to be manufactured to fit the existing opening. A window even fractionally too small will let those outside elements in. A window to tight will cause stress cracks in the glass and frame of the window. You will spend more time and money to make the stock size window to fit than just buying a custom made window. "Custom Made" doesn't have to mean expensive. At Empire Supply Co we offer custom made windows at the best price. If you buy a stock size window you limit option choices such as Clear, Low-E, Obscure, or Tempered glass, Grid style, Fiberglass or Aluminum screen wire, etc. It may take more time to receive a custom made window, but in the end you have installed a window the right way.
Our windows are tested and certified by independent third party associations for energy efficiency and performance requirements. All windows are verified to pass each of their own rigid performance tests and for conformance to industry standards.