Keeper for Keller lock

A quick learner from Lakeland, FL says:
I need the other half of a 90-031 latch. Is it available? Or is there a 1 1/2 inch replacement kit where I can get both halves in one kit?
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Casey from SWISCO responded:


We would like to help but, unfortunately, these locks are very old-fashioned and replacement parts are becoming hard to come by. I'm sorry that we won't be able to assist with this repair but please let us know if you have any other hardware questions. Thanks for posting. 

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