sliding glass door

A professional from fort Lauderdale says:
1/2 wide, 1 1/8 tall, 2 1/2 long plastic 1 1/4 wheel
Thumbnail of the uploaded file named Roller housing
Thumbnail of the uploaded file named Roller wheel
Thumbnail of the uploaded file named Concave wheel
Thumbnail of the uploaded file named Roller
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Dave Sr. from SWISCO responded:

Hello,

I would recommend starting by taking a look at the 81-090 roller below, which also comes with a steel wheel. If you'd prefer a nylon wheel to help with the rust, see the 81-228 and 81-310 set of axles. Take a look at all the suggested parts along with the related videos to assist you. Thanks for posting. 

Alternate image for 81-090
Alternate image for 81-090

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