Window Sash Guide Identification

A handy person from West Los Angeles says:
Hello,

I want to replace the channel balances and sash guides for my window. I know that the balance model I need is the 28" Series 351 2760, but I can't find a replacement for my sash guides. The ones I have contain sliders for locking the sash at a set spot. Can I get help identifying the part I need?

Thanks!
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Bob from SWISCO responded:

I am afraid we don't carry a Top Sash Guide quite like this. A local hardware store may be able to better assist you. I apologize we can't be of more help, and best of luck with the repair. 

A handy person from West Los Angeles says:
Thank you for looking into it Bob. Would you be able to help me find a Top Sash Guide that I might be able to use without the slider? Is there another option that might fit mine?

Thanks
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Bob from SWISCO responded:

I'm not certain, but how does the 18-110B match up? Compare and see what you think. 

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