Sash top plastic guide

A quick learner from Southern California says:
I am trying to replace a plastic guide for my window. I have no identifying part numbers for the sash mounted guide. The plastic part measures 1 3/4" by 5/8". I have attached 3 pics with as much detail as I could get. The window is hung with the 31" Series 385 Channel Balance and a 15-004 shoe and a 19-005 top if this helps. The window is a white vinyl non-tilt window. Any help would be greatly appreciated. Thanks, Judy
User submitted photos of a top sash guide.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
Hi, Judy. Check out our 18-171 and see if this can work for you.
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