303 Windows also known as Centennial Home Improvements Inc. is a Denver Window company serving Denver Metro Area by installing Amerimax Vinyl Windows. We have an A+ rating and gold star award from Denver Better Business Bureau yearly. We use Amerimax Windows because we believe it is the only window specifically built for the climate of Colorado.

For the past 18 years, 303Windows 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 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.