Create your own one-of-a-kind Advent calendar with this DIY Advent Calendar Packaging! You can fill these calendars with so many different things! Each cubby in the internal tray is 3" x 3" x 3" and can accommodate a lot of different items. The calendar is approx. 10.5" wide x 14.25" tall x 3.5" deep when it's closed. Make a special DIY Advent calendar gift for a family member or friend by heading to your recipient's favorite store and grabbing 12 items that you know they will love (just make sure the items fit in each 3" x 3" x 3" space). This item includes PACKAGING ONLY. This listing is for advent calendar boxes, and the corresponding internal trays that hold the items in place. This listing is for the advent calendar box, and the white internal tray only. You will receive (10) outer boxes that have 12 perforated doors and (10) white internal tray with dividers. The calendar opens like a book and has 12 numbered perforated doors. on the top and bottom of the calendar, this is where the white internal tray is inserted into the box. We do recommend heat sealing any food items that you place in the tray. The tray is made of an extremely sturdy corrugated cardboard (so it can hold heavy items) and is white inside and out for a clean look!