Sliding glass patio door roller ID

A quick learner from Richmond, Va says:
March 10, 2019
I am attempting to locate a replacement part for this particular roller. The only Number located on the item is NW-012. I am unable to locate any replacement part. The door is approximately 20 yrs old and I am unable to locate any name on the door or part.
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Tom from SWISCO responded:
March 13, 2019

Hello! Your old Allen Stevens roller is no longer made, but we've had many customers successfully use our 81-005 as a substitute. Look it over and see what you think.
Sliding Door Roller, 1-1/4" Steel BB Concave Wheel
Sliding Door Roller, 1-1/4" Steel BB Concave Wheel
81-005
$8.47
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