Glass patio door wheels

A quick learner says:
Hi need to find out what wheel hardware these doors have.
Thumbnail of the uploaded file named 16222223398007622694909998378419.jpg
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Bob from SWISCO responded:

I am afraid we can't ID what you need from this photo. Please remove the roller and give us dimensions. The video below shows how. If the rollers are unavailable, I am afraid there's no way of saying what your door needs. Barring very few exceptions, it's crucial with sliding glass doors to see the roller out to ID it. I apologize for any inconvenience. 

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