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Window Products Manufacturers

Listed Alphabetically


Guardian is a worldwide supplier of flat glass, and a leader in soft coat high performance glazings for construction. With a plant near Pittsburgh in Floreffe, PA, Specified Systems is a Guardian Glazing Connections Partner, linking the technical experts at Guardian with architects and end users.


Kawneer North America offers architectural aluminum building products and systems for the commercial construction industry. In 2010, Traco, a premier manufacturer of windows, was acquired by Alcoa and is now a division of Kawneer. Together, we provide customers with a comprehensive product portfolio that includes entrances, framing systems, windows and curtain wall systems.


Peerless Architectural Windows and Doors has been supplying commercial windows to our company since 1993. They manufacture a competitive line of projected, fixed, and hung windows for new construction and retrofit. Peerless offers high quality products combined with timely delivery.

PPG Industries

Pittsburgh based PPG is an industry leader in architectural glass and paint finishes. Our personnel work closely with the experts at PPG to determine the best quality glass and finish applications for our projects. From glass tints to thermal performance to finish colors, all of our window and component suppliers offer quality PPG products.

Quaker Windows

Quaker is our choice for competitively priced, quality single hung and sliding windows for the extended care, hotel, and residence hall markets and competitive projected windows for commercial construction.

Wausau Windows

Complimenting our strong line of commercial and institutional window products is our recent addition of Wausau Windows. Wausau is a quality conscious brand with state of the art fixed and projected windows and is an ideal fit for schools, hospitals, and fixed window applications.


Tubelite has been an industry leader manufacturing aluminum storefronts, entrances, and aluminum curtain wall systems for decades. They have now introduced their Eco-efficient process where 83% of their material is made from reclaimed material and their new Thermal-Block entrances and frames.

Specialty Applications

Since Specified Systems provides complete glazing packages, we offer FRP doors from both Special-lite and Vale; interior removable partitions from Wilson Partitions and Kawneer; Sage Electrochormic glass; Heavy Glass interior systems and doors; fire rated glass and frames from TGP, Safti, and Vetrotech; folding glass doors from Nanawall and CRL; bullet resistant glazing; Blast and Impact applications; Sunshades and Light Shelves.