JC=Jewel Case
standard CD jewel case
average height=5"
average width=5.25"
average depth=.375"

SM=Small
height and width same as DVD box
average height=7.5"
average width=5.5"
average depth=.5"-1.5"

DS=Double Small
approximately twice the width of a DVD box
average height=7.5"
average width=10.5"
average depth=.5"-1.5"