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Marvin Windows and Doors from Gravina’s Window Center 

replacement windows denver

Family owned and operated in the heart of Historic Littleton, Colorado for over 40 years, Gravina’s Window Center pioneered replacement windows. As the oldest Infinity from Marvin Windows dealer in Denver, we know the benefits of fiberglass windows in Colorado. Our staff at Gravina’s Window Center are knowledgeable in energy efficient replacement windows, patio doors and more.

With sliding and swinging patio options, as well as a breathtaking range of expansive scenic doors, we offer elegant designs to blur the barrier between inside and out. 



Marvin Ultimate Casement
Interior kitchen of the Green Hill house featuring Marvin Ultimate Casement Windows.


We represent the industry’s finest window and door manufacturers: Marvin, Infinity, ProVia, and Therma-Tru; as well as James Hardie siding.

Our in-house installation crews are the best in the business, certified by InstallationMastersUSA, and have the craftsmanship and know-how to transform your house into the home you deserve.

We take pride in the products we represent and ensure our customer’s satisfaction throughout the duration of their home improvement project.

Some Benefits of Replacement Windows:

  • Reduce your monthly energy usage
  • Improve your home’s comfort and beauty while gaining peace of mind with additional security,
  • Gain peace of mind with additional security from newer window technology
  • All while being GREEN at the same time. Choose a company that helps you protect our environment now and for future generations.