One piece of one
Length+Widthx2+5=total length of paper
Width+Height+0.2=total height of paper
For example: 40x30x20cm specification
40Length+30Widthx2+5=145cm
30Width+20Height+0.2=50.2cm
Two pieces of one:
Length+Width+5=total length of paper
30Width+20Height+0.2=50.2cm +20H+0.2=50.2cm
Two pieces of one:
Length+Width+5=Total length of paper
Width+Height+0.2=Total Height of paper
For example: 40x30x20cm size
40Length+30Width+5=75cm
30Width+20Height+0.2=50.2 cm
Bottomless box type:
One piece of a piece: length + width X2 + 5 = total length of the piece of paper
width divided by 2 + height + 0.2 = total height of the piece of paper
For example: 40*30*20cm specifications
40 length + 30 width X2 + 5 = 145cm
30 width divided by 2 + 20 height + 0.2 = 35.2 cm