replacement plastic parts located in the bottom of the original windows in a 1985 built home

A quick learner from California says:

In need of window replacement parts taken from aluminum windows inside a 1985 built home, because it's hard to push left or right for opening or closing of windows. We had no information related to the brand nor the part number for the replacement parts except the photo image of the actual part unscrewed from the sliding window.

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Bob from SWISCO responded:

Thanks for writing in. Is this a sliding window roller? If so, it looks quite similar in design to our 87-224, but compare to the diagram below and see if the dimensions match what you have.

Dimensions for 87-224
Dimensions for 87-224

A quick learner from California says:
I need to replacement for 5 windows, 10 each total. Can I order here? How soon will the parts be received in?
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Bob from SWISCO responded:

You can place an order for these directly on our site at your convenience. We currently have these in stock, so delivery time will depend on what shipping method you select during checkout. Finally, please make sure to carefully review our dimensions and design before you place an order. While this part is similar, it's by no means a guarantee. You can also see our return policy here for peace of mind.

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