The Blu-Ray case back and front panel covers are always 126 mm x 148 mm (width x height), you can select a different spine width in the Blu-Ray Cover printer.
Width: 257 mm or 10.12 inch
Height: 148 mm or 5.83 inch
Width: 264 mm or 10.35 inch
Height: 148 mm or 5.83 inch
Width: 266 mm or 10.47 inch
Height: 148 mm or 5.83 inch
Width: 276 mm or 10.87 inch
Height: 148 mm or 5.83 inch
JPG-template blu-ray case 5 mm spine (300 dpi)
JPG-template blu-ray case 12 mm spine (300 dpi)
JPG-template blu-ray case 14 mm spine (300 dpi)
JPG-template blu-ray case 24 mm spine (300 dpi)