How to define the fitting part of a door or window

[hal9000]

I have seen that the open door object, although its surrounding box is thick to include the open leaf, only uses the part of the frame to fit it to the wall where you'r putting it.

How can I define such "fitting box" for a model exported by me from Google SketchUp, for example? If I just take a model of open door exported by me, then SH3D takes its full size to adjust to the wall, compressing the open leaf with weird results. [:(]

[hal9000]

Oh, I forgot something related. When I insert one of the included doors it appears on 2D correctly drawn as a door, but when I use a door imported then it appears as a solid box.

Is there a way to prepare a custom model for it to be drawn correctly as a door?

[hansmex]

Angel,

You may want to read this message.

Hans

[hal9000]

Oh, it seems like I didn't use the correct search terms. [:))]

Thanks Hans!