Looking for replacement dash for old Allen o window lock

A quick learner from Austin TX says:
I have this window lock that says Alenco and I am missing the lock part on the other side. What model do I buy?? Or how do I measure?
User submitted photos of a window lock.
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Tom from SWISCO responded:
Thanks for posting! Take a look at our 90-020, this may be what you're looking for. Carefully go over our dimensions and let me know what you think!
A quick learner from El paso texas says:
I have the exact same window with the same broken keeper, I was wondering how do I access the keeper, the window doesn't come out, I can't remove it to replace the keeper, it's a window with grids
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Paul from SWISCO responded:
Our 90-273 keeper isn't screwed on to the sash. It is riveted to the frame at the factory. Hopefully you can lower the top sash, pull off the keeper to expose the two holes for the pins on the back of the keeper to slide in and somehow crimped the pins from the outside of the sash frame.
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