We offer the industry’s only “standard” double-wall insulation system, consisting of 16-gauge cold-rolled galvanized steel panels on the interior and exterior panels with a minimum R-9.6 in-wall insulation, and another exterior continuous layer of R-9.6 insulation encapsulated in the final exterior 16-gauge steel panels. They are MIG welded between frames and mullions, creating a self-aligning, unitized structural diaphragm. In-wall insulation may vary, depending on installation location. In workplaces requiring high-security levels, guard enclosures can be constructed of blast-resistant and bulletproof materials.