Double insurance bullhead lock wooden door opening standard

1, opening position: double insurance bullhead lock opening position should be in the center line of the wooden door, the distance from the edge of the door should be half the width of the lock body.

2, hole depth: double insurance bullhead lock hole depth should be half of the length of the lock body to ensure that the lock body can be completely embedded in the wooden door to achieve the effect of security lock.

3, aperture diameter: double insurance bullhead lock aperture diameter should be the same as the diameter of the lock body to ensure that the lock body can be completely embedded inside the aperture, to achieve the effect of security locking.