Founded in 1962 as Cardinal Insulated Glass Co., Cardinal Glass Industries manufactures residential glass for windows and doors and has grown to nearly 10,000 employees across 49 locations. The management-owned S-Corporation developed from insulating glass production into a provider of advanced glass solutions, with research and development centers in Minnesota, Wisconsin, and Florida.
CE Certification
U.S. ENERGY STAR 7 Glass Guidance
Compliance program
CE
Quality certification
Intigral, IncFounded in 1987, Intigral manufactures residential glass for window and door manufacturers, building on a history of developing insulating-glass technologies and manufacturing processes. The company produces glass solutions such as insulating glass units and integrated blinds-between-glass, and supports manufacturers with fabrication and ongoing product-program collaboration.QUAKERTOWN, PA
Cardinal Northeast LGCardinal Northeast LG specializes in developing and manufacturing custom laminated glass with 37 locations across the country and more than 7000 employees.JESSUP, PA
Splendor Glass CompanyFounded in 1952 as a fabricator and installer of room partitions, Splendor Glass Company now manufactures custom glass products and shower enclosures from its U.S. facility in Holland, Ohio. The Wanamaker family has owned and operated the company since the 1960s, guiding its growth into a 100-plus-employee fabricator with robotic production and a 120,000-square-foot facility. Splendor serves residential and commercial customers nationwide and is recognized among the Top 30 glass fabricators in North America.HOLLAND, OH
Thermo-Twin WindowsFounded in 1972 as a glass supplier, Thermo-Twin Windows is an employee-owned Pittsburgh-area manufacturer and remodeling company that crafts windows at its Oakmont facility. The company also designs and installs windows, doors and sunrooms, with its own crews handling installation across the region.GLASSPORT, PA