Mortise Cylinder need it

A home owner from New York says:
May 7, 2018
i need your help finding the so call mortise cylinder.
I spent a lot time looking for this lock with no luck.
thank You
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Tom from SWISCO responded:
May 11, 2018

We offer a couple different storm door key locks, though I'm not sure exactly which one would be best for you. Look at our 40-089, 40-123, and 40-129 to start out and see if you could get one of these to work.
Key Tumbler Thumbturn
Key Tumbler Thumbturn
40-089
$27.15
Offset Key Cylinder with Thumbturn
Offset Key Cylinder with Thumbturn
40-129
$39.28
How to flip a storm door mortise latch.
How to flip a storm door mortise latch.
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