Kirby Building Systems manufactures custom-engineered metal building packages for commercial, industrial, institutional, recreational, aviation and specialist projects. Its systems include primary framing, secondary members, roof and wall panels, insulated metal panels, insulation, mezzanines, doors, skylights, racking and accessories.

The company performs engineering, detailing and fabrication at its Tennessee plant and supplies technical manuals and erection drawings, while authorised builders provide local design-build and construction services.