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This R-36 double-stud wall has a structural 2x4 exterior wall and a non-structural interior 2x3 wall connec… | Frames on wall, Construction insulation, Wall systems
Double-Stud Wall Framing | Building America Solution Center
This R-36 double-stud wall has a structural 2x4 exterior wall and a non-structural interior 2x3 wall connected with plywood gussets providing 12 inches of cavity space for blown cellulose