This is a weather seal that seals between 2 glass doors- the manufacturer is amaralite
Dave Sr. from SWISCO responded:
February 6, 2018
I'm afraid that this screw on wool pile channel is no longer available. I would suggest just replacing the wool pile with the tall 58-179 or the shorter 58-127. The backing should fit the channel. See if either of these match the one in your door.