Cylinder will then pull out.
How to replace a security screen door lock.
Insert the new bolt into the opening on the edge of the door and fasten it to the door with the provided screws.
Open the screen door to access both sides of the lock body.
Did you lose the key somewhere near your house and now you are worrying that perso.
Insert the exterior part of the lock into the door by feeding the long metal piece through the opening in the center of the bolt.
To do this when door is open you will need to press the deadlatching pin which sits above the main latch next you will need to undo the cylinder retaining screw then insert and turn key to lock position.