Adding an external lock to existing hardware

Question

I have an existing sliding glass door (pictures attached) and I'd like to either add an external key lock to the existing hardware (there is a punch out?) or replace the hardware with a compatible door lock that has an external key.

Lock is double mortise with the hooks facing inward, windows in the house are pella, but I couldn't find any markings on the door. I like the style of the existing hardware, but would be fine with similar.

Homeowner, quick learner, should be able to do the installation myself.

Casey · Accepted Answer

Hello,

Since your external handle has a punch-out for a key lock, take a look at the 82-310 and the related installation video to help you through the process. Ignore the key lock housing shown in the video, which your handle does not require. Thanks for posting!