Who We Are

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Stahlin Brothers historical photo

Throughout over 70 years, our innovation and proven quality have enabled us to lead the way in the electrical products industry in designing, engineering and manufacturing a wide range of world-class fiberglass, polycarbonate, and PVC electrical and instrumentation enclosures for diverse interior and exterior applications.

Stahlin provides the marketplace’s most extensive in-stock and customized line of non-metallic enclosures and accessories, balancing appealing aesthetics with stringent physical property performance standards including IEC IP66, IEC IP68, NEMA 4X, and NEMA 6P integrity.

As a proud U.S. manufacturer, we are the primary source producer of all our own enclosure components.

Stahlin Brothers Fibre Works

Our company was originally known as Stahlin Brothers Fibre Works. John and Paul Stahlin were young entrepreneurs who grew up in the city of Belding, Michigan in the early 1900s.  Beginning in 1935, the Stahlin brothers launched a series of business enterprises serving the appliance, defense, and automotive industries. In 1953, the company made its first venture into the electrical industry when it began producing fiberglass channel.

Over the next decade, growing expertise in effective production of fiberglass products resulted in the evolution of the world’s first electrical fiberglass enclosure, and an entire new market sector was born. Growth followed quickly and many enclosure families that originated during the 1960s and 1970s – our pushbutton series, J series, and N Series – still exist today as thriving product lines.

historical photo of a man with Stahlin enclosure
historical robroy industries photo

Robroy Industries

In 1978, Robroy Industries of Verona, Pennsylvania reached an agreement to purchase Stahlin Brothers. Robroy Industries was established in 1905 by Peter McIlroy whose fourth-generation great-grandsons, Rob and Jeff, own and operate the company today. Organizationally, Stahlin Enclosures is a brand of Robroy Industries. 

Our pioneering history has empowered us to remain at the leading edge of today’s electrical enclosure industry with hands-on control of our integrated, in-house manufacturing process from first step to last touch. This has resulted in unsurpassed, proven product performance quality.

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Craig Mitchell in Robroy Enclosures Plant

The Robroy Difference

Our non-metallic enclosures offer significant economic savings over metallic alternatives such as stainless steel, yet provide comparable or superior physical property benefits. We are price competitive with other non-metallic enclosure material options while frequently offering better performance value.

At Stahlin Enclosures, we take pride in our relentless pursuit of innovation, driving us to the forefront of our industry. Our commitment to pushing boundaries and exploring new horizons sets us apart as true trailblazers. Fueled by a passion for creativity and a dedication to excellence, we continually seek inventive solutions to address the evolving needs of our clients and the market. By harnessing the power of innovation, we not only stay ahead of the curve but also inspire positive change within our organization and beyond. For us, innovation is not just a goal—it's ingrained in our DNA, propelling us to new heights and ensuring our clients receive the most advanced and effective solutions available. Join us on this exciting journey as we pioneer the future of the electrical enclosure industry.