There are several different types of CD cases. The standard single CD jewel case usually measures 5.59 inches by 4.92 inches by 0.39 inches. Slimline cases usually measure 5.59 inches by 4.92 inches by 0.2 inches.
The standard double CD cases are generally 5.59 inches by 4.92 inches by 0.4375 inches. There are many other different types of CD cases that can vary greatly in their dimensions, including super jewel boxes, DualDisc cases, paper and cardboard sleeves, QPacks, digisleeve hinged cardboard sleeves, discbox sliders, compact plus and LP-style slip cases. CDs can also be packaged in the plastic "keep cases" in which commercial DVDs usually come.