We need 4 new rollers for our sliding glass patio door. Above our photos of both sides of the roller mechanism. The roller is marked 138 and that's all I know.
Tom from SWISCO responded:
June 25, 2020
Hello! Reviewing your photos, I think our 81-007 roller is a good match. However, I recommend comparing the dimensions we show on its store page just to be 100% sure everything lines up.