SWISCO - The Replacement Hardware Authority

Sliding Door Mortise Lock Part #: 1060-1943

A home owner from Ewing, NJ says:
Hey everyone, the latch on my sliding door mortise lock doesn't extend any more and I was looking to replace it.

Is has an inside latch with 5-3/8" installation hole centers and a 45 degree dead-latch. The http://www.swisco.com/Mortise-Lock/pd/Patio-Glass-Door-Replacement-Internal-Locks/82-227 looks to be the replacement part but I'm concerned that there are no mounting screw holes on the sides of it like mine does.

Can anyone verify that the lock will come with side mounting holes or whether they're actually necessary? Thanks, in advance, for your help!
A home owner from Ewing, NJ says:
Doesn't look like the pictures loaded the first time.
User submitted photos of patio door hardware.
Profile picture of Paul
Paul from SWISCO responded:
I agree, the 82-227 looks like a close match. I'm not sure about those side mounting installation holes. Our 82-227 does not use them, and I've never used such a thing. Check out the video below to see how this type of lock is typically installed.
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