Our project features a custom Glazed Aluminum Curtain Wall skin. The curtain wall contractor will obtain custom-made glass, aluminum, and steel components from its suppliers. In order to facilitate material transport and installation, the contractor has elected to construct unitized curtain wall sections of various sizes and shapes in the shop before transporting the sections to the site and mounting them on the building. Because the curtain wall sections are composed of multiple materials, the sections could be considered individual "assemblies" according to the Reference Guide. If an assembly calculation is used, the relative weights of the components in each section would have to be used to determine the recycled value of each individual section. We submit that it is appropriate to calculate the recycled value of the curtain wall using the original components, rather than performing an assembly calculation for the individual unitized sections. The custom-made glass, aluminum, and steel components used in the construction of the sections can be accounted for pre-assembly. The contractor is able to identify the cost and recycled content information for each type of material. Since the recycled content value of the curtain wall\'s component materials can be accurately tracked using our proposed approach, the intent of the credit is maintained, as preference can be given to materials containing recycled content. Please confirm if this approach is acceptable.