Another simple advent calendar design this is a large calendar and is A3 in size, not often used as a direct mail piece this calendar is more popular as a retail item. Custom printed with your graphics the design behind each window is bespoke to your design. Available in two depths as a stock advent calendar, either 17mm or 30mm deep. The A3 advent calendar is available with a range of inserts to suit your requirements and for those wanting an advent calendar without a plastic tray we can supply a cardboard tray with corrugated inserts.