For the curious, [here is the file I used.](https://www.thingiverse.com/thing:2917585) There are [many others, too.](https://www.thingiverse.com/search?q=screen+door+handle&type=things&sort=relevant) I was a bit concerned about the bridging in the recessed potion of the handle, but as you can see, it wasn't much of an issue.

Our printer is a Dremel Digilab using their proprietary PLA filament. The plastic may biodegrade over time, but that depends on any number of factors, and now we know how easy it is to replace if anything does happen!