I Need To Replace These Top Sash Guides

A quick learner from Carlsbad CA says:
Tom recently helped me with some channel balancers. The series 380 balancers were a perfect match...thank you. I now need to replace some of the top sash guides per the attached.
User submitted photos of a top sash guide.
Profile picture of Tom
Tom from SWISCO responded:
How about our 18-171? This appears similar. Do you think you could use this as a replacement?
A quick learner says:
Thanks Tom...I beleive that will work and I ordered a few to try...Mark
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