Southeast Michigan's Trusted Supplier of Through Wall & Scupper Boxes

We fabricate, supply and install custom metal components for commercial, industrial and residential projects   

JML Architectural Sheet Metal is a leading fabricator of through wall & scupper boxes in the Detroit Michigan area. We carry a large inventory of architectural sheet metal products and can handle almost any size projects. We supply and fabricate through wall & scupper boxes in our own facility, allowing us to customize roofing products, gutters, and other architectural metal elements to fit your unique project.