Replacement Windows San Francisco |
Window Installation Bay Area | Low Cost Affordable Windows

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Please check the types of windows that you are interested in and let us know when u give us a call to schedule your completelly free of charge estimate!


The estimator evaluation of the project is necessary because every window that we sell is made and designed specifically for the opening that you have.


Please consider that if you want Over-the-phone estimate and quote.

With over 20 years of experience GTI Inc provides the exceptional and professional service for any window replacement project. Trained and trustworthy installers ensure quality workmanship and unsurpassed personal attention to our clients.

Whether you choose vinyl, aluminum or wood windows, GTI will deliver you the highest quality products, excellent finish and satisfaction for years to come.

We stand behind our outstanding reputation guaranteeing you peace in mind and assuring that all of our client’s needs are met. We do not only sell, we make sure you will get what you need and what you expect to.

All of our windows are energy efficient that will provide you money saving year round. The windows are built from the highest quality components that will make sure your house will look beautiful for decades.

The warranty fully covers windows and installation and will save you from any stress.

Replacing windows and Window Installation In San Francisco with GTI Inc can be only positive and stress free experience.

Starting from free in home estimates and finishing with detailed installation, we will take you step by step through the process of your window replacement project making sure you’ll enjoy the change and the beauty of your new windows.

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Single Hung Windows

feature a fixed top sash and movable bottom sash that can tilt inward for easy cleaning.

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Double Hung Windows

feature movable upper and lower sashes that tilt inward for easy cleaning.

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Horizontal Sliding Windows

the sashes glide horizontally. They are available in 2 or 3-lite configurations with the 3-lite horizontal sliding windows having operable end vents.

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Bay Windows

they consist of three windows in a single frame. The center lite is always twice as wide as the sidelites, which may consist of two operable casements or double hung windows.

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Bow Windows

this specific window consist of 3, 4 or 5 windows in a single frame. All of the them are equal size and provide a circular arch appearance.

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Garden Windows

support a sunlit spot for plants and are usually installed above kitchen sinks or in the dining rooms.

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Casement Windows

can be hinged on the left or right and open outward to a 90-degree swing.

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Awning Windows

can be hinged at the top and are opening outward.

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Basement Windows

also called Hopper windows or Basement windows open inward from the top and typically get installed in basement applications.

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Picture Windows

also called deadlites, have fixed sashes that do not open at all because of it's design.

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