Spec Engineering, A Gray Company

Spec Engineering, a Gray company delivers process engineering services for customers in the food, grain, minerals, chemicals, and pharma industries. In 2019, Spec joined the Gray family of brands to complement its process engineering services. Since 1979, Spec has been a single source for system design and process equipment integration. We specialize in processing systems from raw materials through packaging. With over 40 years of expertise in Food & Beverage systems and process equipment, Spec works with customers to meet demands in bulk processing and material handling by providing practical design solutions that cater to their unique needs. Our personalized solutions in equipment and technology give customers a competitive edge in the ever-changing global marketplace.


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25523 W Ruff St.
Plainfield, IL 60585
Fax: 630.303.9800