sliding glass door handle/lock set

Thanks for contacting SWISCO. Could you provide pictures of the mortise lock and handles? That will help narrow down what you need. Thanks.

Thanks for getting back to us with your photos. You may want to start with taking a look at our 82-020 mortise style handle set along with our 82-225 sliding patio door internal lock. Look it over closely and let us know if these parts are a match for you. 

Your exact handle set, which was used with the 82-225, is no longer available. I would suggest using a newer style surface mounted handle like our 82-005. You will need to adapt it to your door by drilling new mounting holes, but I believe this is the closest match to your existing handle. Also look at the other related exterior handles that can be used with the 82-005 like the 82-042 or 82-306.