Expanding Our Capabilities in 2021

Build Out Started on New Facility

540 Frontenac Court, Suite 180, Naperville, IL 60563


Spec Engineering will have a new home in 2021! Only a short drive from the current Plainfield, IL location, our new 75,000 s.f. facility will be located in Naperville, IL. This move allows us to expand our capabilities and is just another example of our commitment to growth to better serve our customers in the future.


Accommodating Staff Growth

•   Expanded Private Offices

•   Workstations and Flex Desks

•   Dedicated Project Meeting Rooms

•   Conference Rooms

•   Town Hall Meeting Area


Increasing Capacity in Fabrication, Machining, Welding, and Finishing

•   Ten Dedicated Cell Assembly Workstations

•   Expanding UL Panel Shop Capacity to Four Times the Current Size

•   Panel Manufacturing Shop with Automated Workstations for Reduced Lead Times

•   Product Testing and Lab Area

•   Increased Factory Acceptance Testing (FAT) Capabilities and Capacity


Throughout this year, Spec is taking a phased approach to moving into the new facility. The manufacturing and assembly area has already proven essential for the build out of projects and FAT testing. We look forward to welcoming our customers at the new facility later this year!


To learn more about Spec Engineering, visit:

Build Out Started on New Facility

Naperville, IL

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.