Vinyl window lock keeper

A home owner from Los Angeles says:
I am missing the "keeper"? part that the lock hooks into. The smaller back piece. This is one sliding vinyl window with two locks, both missing that smaller back piece. See the second photo of a different window which has the "keeper," for comparison.
User submitted photos of a window lock.
Profile picture of Tom
Tom from SWISCO responded:
I'm pretty sure we can help replace this. Before we recommend anything, can you just tell me the distance between the installation holes, center-to-center?
A home owner from Los Angeles says:
Distance between two screws center to center looks like about 2 inches. See additional photo attached. Thx!
lock
Profile picture of Tom
Tom from SWISCO responded:
I'm afraid we don't have a lock in this style with 2" hole spacing. It's also hard to tell from this picture what it could be. Start with our 90-161 and see if this could be a match.
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