Uploaded September 2021 | Updated September 2026, 2 days ago

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Following this subtle but key factor will greatly diminish the chance of your secret door malfunctioning.

Walls are almost always not perfectly straight. If the corners of the door system are pulled to fit the wall, you might notice one the following problems:

- The door does not close
- The door sticks
- The door shows a gap from its frame when in closed position

Follow this basic tip for a smooth operating secret door!