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Innovative glass rooflight manufacturer, glass roof solutions, glass box access rooflights, sliding rooflights and standard rooflights.

Since 1985, Glenn Glass has been devoted to effectively and efficiently performing glass construction. We are a family owned company that provides quality window and glass systems for a wide variety of applications.

Glenside Glass Company was founded in 1952 by Dave Fowler and Chuck Pianko, like so many other small business owners in the post World War II baby boom era.

Golden Glass has been operating out of Southern California since 1984, and continues to deliver on-time quality products and services to its clients.

Golich Glass, Inc. has been a premier glass company serving Michigan since 1953. Golich partners with builders from custom homes to nationally ranked builders recognized worldwide.

In business for more than 35 years, Philadelphia-based Graboyes is an MBE-certified glazing firm and a trusted leader in architectural glazing and commercial window installation.

Gratec provides custom engineered glass systems and assemblies incorporating both standard components and custom made parts. GRATEC helps designers detail for performance, constructability and value.

Thanks to twenty years of experience in the field of window frames and curtain walls, we are able to satisfy every customer request, providing sophisticated tailor-made design solutions, with an eye to performance requirements.

Anton Griesser layed the foundation stone for what has become today's Griesser Group in the Swiss town of Aadorf in 1882. The traditional company, still at this location today, has put its entire experience into the manufacture of innovative and high-quality products.

Grizzly Glass & Mirror was founded in 1999 by Ben and Terri Schmalzried. Here at Grizzly Glass we believe that creating strong relationships with everyone from general contractors and suppliers to our valued customers is the key to success.

Curtain walling, glass coverings, mullions/transoms curtain walls, ventilated facades and claddings, external coverings: Gualini is capable to realize to the letter every element of covering and exterior characterisation of the building.

Guthrie Glass & Mirror is a woman owned, commercial glazing contractor based in southern New Jersey. It was incorporated in 1986 by Lynn Guthrie and continues to successfully and competitively perform work of the highest quality.

Haley-Greer, Inc. has been a leader in the curtainwall glass and glazing industry for over 35 years. Founded in 1979 by Don Haley and Jim Greer, Haley-Greer, Inc. has grown into one of the largest curtainwall contractors in the United States.

Since 1975, we have been providing glass for new construction sites and residential areas. We specialize in commercial aluminum storefronts. We supply quality, durable glass for frames and doors.

Harmon, Inc. headquartered in Minneapolis, Minnesota, is the leading US curtain wall contractor specializing in design assist and design development projects.