Tying to find rollers

A home owner from Garden city Mi says:
It says custom unit for PH. The wheels say Canada. It appears to be 5 inch long but it's a little bit bent. Its .75 inches wide and 1 .25 inches high. The wheels are 1 1/8 inch.
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Bob from SWISCO responded:

Thanks for posting. I'm afraid we have no exact replacement for these rollers. The closest match we have is the 81-158, but I cannot guarantee that they will work for your door; we have recommended them to past customers who had your exact rollers, and have never heard whether or not they were successful. Look them over and see what you think.

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