Slide latch storm window on storm door

A handy person from Iowa says:
1/4" thick
I see a 3 and an L for markings
Thumbnail of the uploaded file named 20201014_091559[1].jpg
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Casey from SWISCO responded:


I don't recognize this slide latch at first glance but I'm going to have one of our senior experts take a look and see if they could recommend a replacement for you. We'll reach out as soon as more information is available. Thank you!

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Dave Sr. from SWISCO responded:


Take a look and compare your latch to our 91-006 , along with others from the web site here . Unfortunately, I could not find your exact latch from our suppliers. It might no longer be available but see if you can adapt any of the ones we carry to your storm window. Thanks for posting! 

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