Monster Slaughter Door

Made from "err404"s "Mansions of Madness Doors" collection.
I cut them in half and spread them apart.

Why? Because the paper doors of the game ruin the cardboard. This don't!

EDIT: Added "Sturdy" version that is a bit thicker and has a bit more space in between so it's not as snug on the cardboard. Works well with 0.4 Nozzle and 20% infill!
And I'm sure you can even increase layer size to 0.2, not tested that yet though.