Dave Sr. from SWISCO responded:
June 2, 2014
Thank you for posting. This looks like what we like to call a "gripper lock" patio door handle set. By that I mean that it grips a surface mounted keeper or trim that is attached to the patio door jamb. Is that how yours operates? If so, you should consider our 82-009A or 82-060 handle sets. These work in a similar fashion, however the hole centers are different and you will have to retrofit them to work on your door.
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