Well, that model was a mess. I decided to create a completely new model similar to your example. I have added it to my DodecagonDoors furniture library. Using the library has the advantage that sashes are shown in the 2D plan and the model has nice borders that extend outside the wall. Without a library you can't get that.

The door is created for a wall with a 20cm thickness and of course the door opens. You can change a multitude of materials for different parts of the sides and the door, both for inside and outside (27 material names). And while it is more detailed it is less than half the object size of the example [:)]

You can download the library from dodecagon.nl/dodecagondoors.