patio door surface lock set would like to convert to exterior keyd

Quick Learner from toronto
i have CD344 inside surface lock and an exterior CD442 handle on my 1.5 inch patio door. would like to add exterior lock access. pls recommend a replacement or addition i would require to install. thx
2 Replies
Tom
Tom from SWISCO
SWISCO
Expert

Hello! I'm not familiar with those part numbers. Can we start off with some photos of the existing handles, so we can move on to find a replacement?

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