The Butler Manufacturing High Profile Metal Over Metal Retrofit System is designed to allow the installation of the MR-24® Roof System over an existing "R" panel roof. The System uses spacer clips and structural members to which the new MR-24 Roof System is attached. The System is an assembly of quality components, assembled in the field to achieve a weathertight standing seam roof that performs like a single steel membrane protecting the building and its contents. All materials manufactured and purchased by Butler Manufacturing are of first quality. To ensure quality, all materials and parts must meet rigid material and performance specifications established by Butler's Research and Development Department.