Sunshine mirror bottom roller folding glass door

A quick learner says:
Roller
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Paul from SWISCO responded:

Greetings. It appears someone tried to repair the door before by mixing two parts of the door. You are showing the 21-092, which is used on the pivot bottom corner of the door as an adjusting pin. The round nylon guide is from the 23-120 top door spring loaded guide. 

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