Home – Blog – Metal Buildings – Steel Building KB 33 28x40x14 12×12 rollup door 36×80 windows Vertical sides ends and roof Steel Building KB 33 28x40x14 12×12 rollup door 36×80 windows Vertical sides ends and roof / Metal Buildings, Steel Buildings / By Craig Heineman Steel Building Specifications: 28x40x14 (1) 12×12 rollup door (1) 36×80 (3) windows Vertical sides, ends, and roof