A standard DVD case is 5.3 inches wide by 7.5 inches high and 0.5 inch thick. The industry standard size was set by Amaray, which made the first plastic DVD cases.
The interior of the case varies from manufacturer to manufacturer, but most utilize a raised plastic hub the same diameter as the DVD to hold the disc in place when the box is closed. Although the length and width of a case is strictly held by manufacturers, the thickness of individual DVD cases may vary depending on whether they are designed to hold one or multiple DVDs. There are also slim-fit cases for single DVDs that are somewhat thinner than the standard cases. The cover inserts are 7.125 inches by 10.75 inches for the front and back; interior inserts are 7.28 inches by 4.94 inches.