Replacement roller for sliding patio door

A quick learner from Staten island says:
Door was purchased from and installed by Tri State Window Co. in 2011. there are no identifying marks on mechanism.
Rollers are ss, with a 1 1/4 od. Rollers are approximately 5/16 thick. They are attached to door via one screw.
If you can match part, I would like to purchase 2.
Thanks for your help.
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Casey from SWISCO responded:

Hello,

I don't recognize this roller at first glance but I'm going to have one of our senior experts take a look and see if they could recommend a replacement for you. We'll reach out as soon as more information is available. Thank you!


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Dave Sr. from SWISCO responded:

Unfortunately, we could not locate a roller like yours with stainless steel wheels. We do carry the 81-241 wheel and 81-310 axle kit if you can reuse your existing housing. We also carry the tandem roller sets, but not in stainless. Take a look at the 81-030 and 81-155 to see if the dimensions and mounting hole locations match up to yours. Also, look over the related videos and information on rollers to assist you. 

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