US Patent No: 8,888,067 BUA1 - Universal Arch StackedMODULAR - Lineal Ft. / BoxMODULAR RAKED - LF/Boxn/aCLOSURE - Lineal Ft. / Boxn/aUTILITY - Lineal Ft. / Boxn/aNORMAN - Lineal Ft. / Boxn/a