Dave Sr. from SWISCO responded:
April 19, 2017
Most of these old patio door locks are made of die cast metal, which is not the most durable. Your lock looks like our 82-002 set, if you need to replace the whole setup. If you just want to replace the keeper and pull handle, look at our 89-003 and 88-002, respectively. If you do want added security I suggest installing the security bar lock like our 80-006.
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