Window Roller Replacement

A home owner from Milpitas, California (San Francisco Bay Area) says:
I have window rollers that I need to replace, but I am unable to find it in your part list. I have double pane aluminum windows manufactured by Guardian. My windows are about 18 years old. Can you help me with this replacement part?
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
Guardian is the manufacturer of the glass, not the window. I will need you to take out the roller, take a picture and send it to us.
A home owner from Milpitas, California says:
I will take a picture of the roll with and without the nylon housing. Thank you for your assistance.
A home owner from Milpitas, California (San Francisco Bay Area) says:
Hello Dave from Swisco,

Per your request, attached are various pictures of the roller.

Thank you again for your assistance.

Customer image of their window roller.
Profile picture of Donna
Donna from SWISCO responded:
Take a look at SWISCO product code 87-177, this looks like what you have, compare the dimensions with your sample to confirm.
A quick learner from Milpitas (san Francisco Bay Area) says:
Thank you. I have placed my order.
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