This is a kind of weird wriggle lamp shade i made but it actually looks kind of nice. The number on the models 20 and 25 is the number og repeats i made of the original 2 shapes on the lamp shade. So 20 has 20 times the 2 first lines i made and 25 has 25. So 20 has more holes and is a bit less sturdy than 25 and 25 is thicker. Then the square and round is the shape of the lines in the lamp shade. Hope it made sense:)