CALENDAR CASES are acrylic cases designed to hold a specially-designed, 12-month printed calendar. The case measures 5-1/2 x 4-3/4 x 1/4" thick. It has a 1/2" lip and a 3-1/2" flange for holding the calendar sheets secure when displayed. They come in a choice of all clear, clear with a black base or clear with a red base.