replace patio door handle

Thanks for contacting SWISCO. Your handle looks like our Sliding Glass Door Handle Set ,  82-069. Be sure to compare your measurements to ours . It looks like you will need a mortise lock as well as the handle set. Measure the distance between the mounting screw holes in your door and then compare them to our Mortise Lock, Round Face, 82-218. Let us know if you have any questions.