Dimension

Before i even start my design process i need to know what the dimensions of the box need to be so i though i measure all three and work out an average in CM....

Height x Width x Depth

Surf = 21 x 14 x6

Bold = 21 x 14.7 x 5.8

Daz = 21 x 14.5 x 5.7

Therefore the average is 

21 x 14.4 x 5.833333333333

but i think it is best to round the numbers to whole numbers so when i make the 3D model it will assemble better. Therefore the dimensions will be

21 x 14 x 6