Need sliding glass door roller

A home owner from Malvern PA says:
Hi! I need to replace this part. I need 2. It is from a sliding glass door from a house built in 1980. I have more photos if needed. The number 175 is stamped on the side. The library card in photo measures 2 9/16 top to bottom so I estimate the part is 2 5/8 long. Thank you!
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Paul from SWISCO responded:

Hello,

The part shown in your photos resembles the 81-011 patio door roller with a 1" diameter flat wheel. Take a look and compare the specifications below to your assembly. Thank you! 

Alternate image for 81-011
Alternate image for 81-011

A home owner from Malvern PA says:
Hi Paul! Thanks for the quick response. I appreciate the advice.
Lisa
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Paul from SWISCO responded:

We're happy to help! Just let us know if you have any other questions.

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