Replacement jambliners

A quick learner from Hudson, Oh says:
Can't find any markings on the window glass or frame. The jambliners are crumbling so when I try new mounts to attach the springs to the sash, the jambliners break apart when handling. The jambliners have a rounded service, not v shaped and not square.
Thumbnail of the uploaded file named jambliner1
Thumbnail of the uploaded file named jambliner2
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Casey from SWISCO responded:

Hello,

Unfortunately, we do not carry replacement jambliners for older wood windows like yours. The only part that we carry for this type of assembly is the 15-104 friction shoe. Your best bet would be to reach out to a local millwork that should be able to supply new jambliners for your window. I'm sorry that we won't be able to assist with this repair but please let us know if you have any other hardware questions. Thanks for posting.

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