Screen door lock.

Sure, I'm always happy to help. Start by looking at our 82-218 mortise lock. Look over our dimensions to see if this can fit in the space in your door. Take note of the installation hole spacing, as well. I would also highly recommend watching the video below on how to install this part; the 82-218 has an unfortunate risk of falling into the door if you aren't careful, so you definitely want to avoid that!