Roller on sliding glass door

A quick learner from San Luis Obispo, Ca says:

On a 1970s , large glass slider. We need 4., plus weather strip, which I will send separately. Thank you, Wendi C

We included a photo of the only markings. Let me know if you need anything else.

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Paul from SWISCO responded:

We believe you need our International patio glass door roller assembly, the 81-162. This roller is very popular in California. Please compare the dimension and see if this matches what you require.

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