Check below to watch our videos on window replacement, patio doors and entry doors and James Hardie Siding.

What are Infinity from Marvin replacement windows?


Marvin’s patented Ultrex® fiberglass is an inert material that is nonpolluting.

Ultrex® fiberglass rovings and mats are made from pure silica sand, requiring less energy to produce into a finished product than vinyl.

You and your home deserve the best!


Gravina’s 2016 Fall Window Deals

What are Infinity from Marvin replacement windows?

Energy Efficiency Whiteboard Video

This video uses whiteboard graphics to explain energy efficiency concepts like U-factor and Low E that is used for replacement windows and doors. Things like U-Factors and Solar Heat Gain Coefficients are very important in the decision making process when it comes to windows and doors. 

Quick Commercial Spot

Replacement Windows Denver | 303-794-0490 | Gravina's Window Center of Littleton

How do we install a replacement window?

How do we install a Replacement Window? In this video, two of our installers show you how to install a replacement window at a project in Southwest Denver. 

Infinity from Marvin Windows | Design and Appearance

Lots of replacement windows fall "flat" when it comes to design and appearance. With Infinity from Marvin you not only maintain the traditional profiles and appearance of wood windows; you'll increase your home's energy efficiency, get a variety of convenient features and never have to paint or stain your windows again!