Spec Engineering Announces New Location in Naperville, Illinois

Spec Engineering’s new manufacturing facility in Naperville, IL opened in late May. This new 75,000 s.f. space, located at 540 Frontenac Court, Suite 180, Naperville, IL 60563, was customized specifically for the Spec team and will serve as the company’s headquarters moving forward. The new facility represents Spec’s commitment to provide additional capabilities to our customers and deliver more complex, high-quality systems and projects. The Naperville location provides additional office space for the expanding team, along with an expanded assembly, manufacturing, testing, and fabrication area. Spec has also expanded the panel fabrication shop in Plainfield, IL, which previously served as the headquarters.


The manufacturing and fabrication space features dedicated cell assembly workstations, a 20-ton crane, increased Factory Acceptance Testing (FAT) capabilities and capacity, and a product testing and lab area. The office space features a large town hall space, open kitchen area, modern workstations, multiple conference rooms for collaboration, and visitor offices to accommodate customers and remote workers.


To learn more about Spec, please visit Spec’s website at Contact Spec at or call 815.676.5006 for more information or to set up an appointment to tour the new facility. Office hours are Monday through Friday from 8:00 am – 4:30 pm.


Located in Naperville, Illinois, USA, Spec Engineering is a single source for system design and process equipment integration. For over 40 years, Spec has been serving the bulk material processing and handling needs of customers by offering complete turnkey solutions. Spec’s comprehensive offerings are included in our Seven Pillars of Service: Engineering, Modular, Equipment, Automation, Processing, Analytics, and Fabrication & Installation. These personalized solutions give customers a competitive edge in the ever-changing global marketplace. Spec has been providing project peace of mind since 1979.


Spec Engineering is a Gray company.

Spec is a process engineering company, focused on best-in-class solutions for customers in the food, grain, minerals, chemicals, and pharma industries. In 2019, Spec became part of the Gray family of brands. As a Gray company, we continue to offer comprehensive expertise, catered to your scope, schedule, and budget.