Use as a gift box ( by sticking the nativity scene under the acetate or position the scene in the middle with the tabs and light up with led mini lights or led tealights
size as provided is approx 9.5 x 5.5 x 2 inches
so in the above sizes the main front cut from A3 card
BUT ....
can be scaled down smaller and cut from 12x12 or A4 accordingly