...if so, maybe I have found a solution? I do recall that the visibility through fences have been discussed before, but when I created my own I discovered that the see-through works just like it should - neither objects nor my own aircraft is invisible through the fences. This might be common knowledge by now, but I created a gmax box with narrow sides, removed the sides, textured those that where left (the faces of the fence) and exported. Since the backsides of each face are non-textured, I guess that you in some way fool the graphics engine of FS2004 so that objects are visible through the fence. If this is interesting, I´d be happy to provide more info.