MetalWrap is an insulated composite backup panel system that consists of two steel skins, permanently bonded to a poured-in-place foam insulating core. The panel provides thermal, air, water, and vapor barriers in a composite assembly. The MR-100 attachment system offers enhanced flexibility, faster installation, and superior thermal performance throughout the joint. The system integrates with the panel joinery, is continuous along the panel length and is designed to work with different exterior rainscreen materials. The attachment system comes pre-punched from the factory, simplifying installation and facilitating the placement of vertical sub-framing. It is recommended for use with 18-gauge steel studs.