Jasmine from SWISCO responded:
May 30, 2023
Thanks for posting! Your handle set resembles our Legacy handle sets. To convert your door to one with a keyed lock, you'll need part 82-086. Look over the measurements and confirm that your handle has an offset latch rather than a centered latch. Dimensions for 82-086
Dimensions for 82-086
The compatible mortise latch you'll need is part 82-260. Again, carefully compare the dimensions to determine if this is the replacement you'll need. Alternate image for 82-260
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