I.Anti-theft door lock coreWhat are the available models?
Common sizes for anti-theft door lock cores typically range from 65mm to 120mm. The size of an anti-theft door lock core can generally be selected based on the thickness of the anti-theft door.

Security door locks are classified into three levels: A, B, and Super B.Level A: The key is flat with a single row of pins on one side. These keys can be opened in approximately 2-3 minutes.Level B: The key has a double row of pins on both sides. Even with tools, skilled workers will still need some time to open it.Super B: This is the most secure level. The key typically has a double row of pins on both sides, along with a leaf or curved shape. The lock core design standard requires a minimum opening time of 270 minutes.
Second, are the lengths of the locks on anti-theft doors the same?
Different lengths of the lock cylinder can occur, even for doors from the same brand. Door models have different specifications, which can result in variations in the lock cylinder size. To determine the required lock cylinder size, it is necessary to measure the existing lock cylinder. A common lock cylinder has a diameter of 17mm, a width of 10mm, and a height of 33mm. If the doors are installed uniformly within the residential community, you can inquire with the property management or neighbors. When purchasing doors, you can consult with the supplier. There may be slight variations in the dimensions when replacing the lock cylinder, within the acceptable range. These variations will not affect the installation and use.