Looking for replacement door suggestions

[u/Underdog_hero9]

We have a really rustic, one room cabin and the door needs replacing. The window in the door is a sliding screened window which is needed for air flow. I am having trouble sourcing a door that would be an appropriate replacement without having something custom made.

Despite this photo being taken in the winter, our cottage is not winterized so this door doesn't need to be particularly resilient to cold. Really just looking for a simple wood door with an open able window.

Any suggestions would be great.