50 Standard Empty Clear Replacement CD Jewel Boxes with Clear Inner Trays (Assembled) - CDBIS10CL Standard 10mm Thick! (Appx .43") This is the same size that the majority of CDs are sold in! Crystal Clear Jewel Box & Tray Allows Easy Viewing of Inside Papers, These jewel boxes are 5-9/16" x 4-7/8" and ~0.43" (10.4mm) thick.