Irwin Interiors System, also known as IIS, is a family-owned and operated business that offers metal stud and wood framing services. Established in 1986, the company provides a range of exterior insulation finishing systems. It also specializes in drywall systems, acoustical ceilings, doors, frames and hardware products. Irwin Interiors System has undertaken projects for the University of California, S&T Bank, Courtyard by Marriott and Covenant at South Hills.
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