Patio door latch

A home owner from Maple Ridge, BC Canada says:
June 24, 2020
The inner part of the lock has interlock printed on it.
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Tom from SWISCO responded:
June 29, 2020

This looks similar to our 82-240 thumb lever. Look it over and let me know if you agree. It should be fully compatible with your mortise lock.
Roto Multi-Point Mortise Latch Lever
Roto Multi-Point Mortise Latch Lever
82-240
$5.20
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