Old storm screen door need dead bolt & handle
I'm not sure what you could use. The holes available in your door are different from what you usually see on screen doors. Without seeing the original handle set, I'm not sure if we can identify what you need. Nothing we have matches the dimensions you've given us, either. I would contact a local mom and pop shop familiar with homes in your area, especially if they make screen doors. They may very well know what this door is and what it used, or may even have it in stock.
Thank you for your continued patience. My first thought was our 40-214, which is a heavy storm door lockset that looks like yours at first glance. However our key lock is pretty high up, while yours seems to be mounted much lower. I couldn't find anything exactly like that, I'm afraid. Do you think you could find a way to get the 40-214 to work in your door regardless?