Latch, sliding vinyl window

A home owner from Milton, DE says:
June 28, 2020
Existing latch (striker plate) is numbered 30207
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Bob from SWISCO responded:
July 1, 2020

I can't cross-reference that code to a particular latch. Can you show us a picture of the parts in question? That would greatly help narrow things down. Many thanks. 
A home owner from Milton, DE says:
July 7, 2020
This is the striker plate I am looking for. They are cast out of pot metal and corrode quickly here at the beach.
Thank You
Thumbnail of the uploaded file named IMG_1384.JPG
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Bob from SWISCO responded:
July 7, 2020

Thanks for getting back to me. I'm afraid this old Truth sash keeper has been discontinued for some time and is no longer available. You may be able to use a keeper like the 90-301 or 90-237 as a replacement. Take a look at their dimensions and see what you think. 
Face Mount Keeper, 1"
Face Mount Keeper, 1"
90-237
$1.67
Face Mount Keeper, 1"
Face Mount Keeper, 1"
90-301
$2.70
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