[Home | Block Iron & Supply Company | Division 8 & 10 Architectural Product Supplier Block Iron & Supply Company has 4 locations across Wisconsin. Our team of sales professionals, project managers, project coordinators & estimators specialize in architectural Division 8 & 10 components for commercial projects to businesses across the country. We work in conjunction with contractors, developers, owners and architects to meet code requirements for each project. We also offer welding & fabricating services, carpentry, locksmithing, specification writing & design, & installation.]