Striker Keeper for Sliding Door Latch

I bought a house in the winter. Then spring came around to find out the latch was missing. I tried several local hardware store and they did not have anything close to it. I tried looking for the brand name and/or model number on the door and there was none. So i went to a friends house that lives in the same subdivision and builder. Took off and and installed on my door and it work. He didn't have any information about the model or brand on his door. Please let me know if you guys have something that will work with my patio door. Let me know if you additional info. Thank you Robert...