Revisions log for Answer #1570

This is ABSOLUTELY normal. I have a brand new T30 door in stock (I just checked) and it is exactly the same. The door has no "protrusion" at the top, so there is always a gap between the door and the frame.

However, the frame has a protrusion "inside" so that the door closes tightly. At least with the door I have in stock.

Since the distance between the door and the frame cannot be adjusted, the size of the gap is predetermined in the manufacturing process.

If you look closely at your door, you will see this.

Like I said, the door is in stock and is brand new. You can see that it has no overlap at the top.