The GT6 Window System

Graham’s GT6 window system is a family of casement, projected and fixed windows with various frame depths. It utilizes common frame parts to allow numerous configuration variations and glazing styles. Each frame depth offers four glazing profile options: beveled, concave, flat, and flat with flush face.

Offering multiple frame depths allows a wide range of thermal performance for exacting specifications. All models incorporate European thermal strut technology for optimum thermal efficiency and low U-values. And they all achieve AAMA AW ratings with minimum air infiltration, high water resistance and impressive design pressures.

The entire platform of products is designed with special euro-grooves to accommodate multiple hardware options and accessory applications. Additionally, superior joinery allows for larger units and more configuration options. Finally, dual finish (two-tone color) is a feature available on all models.

We are proud to offer this new window system and look forward to assisting you with your next project.

Contact your local Graham representative to inquire about the GT6 family of products.

For further details, see the GT6 product pages:


Outswing U-Value Ranges

* U-values vary depending on glazing packages selected, glazing profiles, and operational style

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