10 Allsop Single Strong Boxes CD Jewel Case - CDBIS10DGPR - Durable and Shatter Proof CD Cases Standard 10.4mm Thick with Gray Tray Made of Impact-Resistant Polystyrene to Prevent Breakage! These jewel boxes are 5-9/16" x 4-7/8" and ~0.43" (10.4mm) thick.