Broken double Mortise lock

A quick learner says:

This is a double mortise lock that activates two other locks on the slider. Is the 82-268B the correct lock? And should I get a new strike plate as well. 

It is 6 5/8 x 1 7/16 x 1/2. The holes that go into the door is 7 3/4.Thank you

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Tom from SWISCO responded:

The 82-268B won't replace what you show here. This is our 82-238. I think you'll find this is a better match.

A home owner from FL says:
Thank you. The measurements are about right and it looks like the correct one. You did not answer another question I had. Should I buy a new strike plate. The other one is not bad but would be a good idea?

Thank you.
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Tom from SWISCO responded:

Sorry for missing that part of your post. If your old strike plate is in good condition then I see no reason why you need a new one. The 82-268 will be fully compatible with it.

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