Substitute for 91-056 and 91-057?

A quick learner from Wisconsin says:
I tried to order the 91-056 and -057 but they're discontinued. Do you have a replacement to recommend? Metal is ok too.
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Dave Sr. from SWISCO responded:

We do carry the 91-054 and 91-051 latches. The measurements are a little different, but they might be close enough to fit your storm frame. I'm sorry that we can't offer the originals anymore.

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