top sash guide

A quick learner from Boynton beach says:
Hi, I believe this is the correct one but looks different on front. Mine has no opening but this one doesn't (Product Code: 18-044) I just bought some incorrect ones and just want to make sure these ones will work.I have sliding Lawson windows SH-7500 if that helps but can also take more pics if required.
User submitted photos of a top sash guide.
Profile picture of Paul
Paul from SWISCO responded:
Please see our 18-166. I think this may be a better match, judging by your pictures.
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