For the past 18 years, 303 Windows has been dedicated to providing their customers the best service possible. As part of their commitment to their customers, 303 Windows installs only Amerimax Windows. Built to meet the altitude, temperature extremes and UV exposure demands of Denver, Colorado, Amerimax Windows are renowned for their exceptional quality, workmanship and performance. Amerimax Windows are also one of the only window manufactures that warranties their windows against fading due to UV damage in Colorado.