Truth hardware sliding glass door lock/handle

I am afraid we don't have a match for this handle set type. Past customers have replaced this style handle set with some of our 3-15/16" models, such as the 82-030, but I can't guarantee this works in every case. In your instance however, it sounds like you need a new mortise lock. Now we don't carry any with that faceplate, but the body might be similar to our 82-239, based on the configuration and the keeper. I'd remove your old mortise from the door and carefully compare the dimensions with the 82-239. See if this could work for you. I'm not certain it will, but it's our best option.