Public Supply Company was founded in Oklahoma City in 1946 by two brothers, Ralph and Calvin Wright. After three generations, Public Supply company is one of the largest construction industry firms in Oklahoma. Employing over 225 Oklahomans in more than 300,000 square feet of fabrication and office space. All of our Diamond products are designed by our in-house engineers for efficiency, durability and beauty.

Nothing equals the work ethic of Oklahomans or the products that we turn out. Diamond products embody that pride. Manufactured at our facility in Oklahoma, our windows and doors set the standard for the entire industry. All of our products are designed and tested by us to withstand the harsh elements of Oklahoma's climate.