All coaches are different, but hereís mine if it will help.
It uses a 4" wide wiper seal with no bulbs. I removed the aluminum retainer, removed the old seal, and using the 5/8" attached 3M tape I stuck it in place and reattached the retainer.
My seal from the factory was installed too high, causing it to curl up against the bottom of slide, and not flip back and forth as the slide moved in/out. Not a problem when new, but after 10 years it developed a set and would not seal tightly. Sitting on my couch, I could feel a draft at my ankles. I installed the new one lower so it would flip back and forth.
Colaw RV had the seal for $2.89/ft a year and half ago. REV Group wanted $6.xx/ft
Part # R854050 Accu-Slide