DNS patio door lock replacement

A quick learner from Virginia says:
I want to replace (or modify) our patio door lock DNS industries 16 inside pull standard with a keyed lock for entry from the outside. I'm lost at finding a keyed locking replacement. As long as it fits my door and its keyed, what are your recommendations. Help!

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Dave Sr. from SWISCO responded:
Hey, Penny. If you are handy, you could consider using our 82-302 key tumbler. You will need to remove the old lock, knock out the key plug on the outside handle, and install the key lock in the hole. You should also look at our 82-002K lock set, which comes complete. Review these two parts carefully to make sure they match what you have now.
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