Inspired by this post https://www.reddit.com/r/factorio/comments/a5ferf/i_present_to_you_the_44_universal_balancer/ of u/tzwaan i went to change his layout to look better to the eye.
in the blueprint book is 1 print for each color of belt.
they are shorter for the highter tier of belts becouse the undergrounds are capable to reach longer.