THESE CASES WILL NOT HOLD A CD TRAY, AND ARE NOT FOR HOLDING DISCS. The calendar case is designed for holding calendar slips or promotional booklets and used as desktop displaying of calendar with company brands and promotional inserts etc. These cases open up and flip around so that a calendar (or other any small artwork) can stand up on your desk, shelf, table, or other flat surfaces. The jewel box design makes it so that they're also a great container to insert small items. A CD calendar box with company branded calendar slip is actually a decoration to the workstation as well as a marketing means. Size: Case Size: 5" x 5.5" x 3/8" Insert Size: 5.4" x 4.65"