Overview The complete door lock system consists of mortise lock case, cylinder, level handle. The cylinder is the most important part for ensure the security.
The cylinder is the heart of the door lock set, it determine the security of the door lock, you can see all detailed info about lock cylinder in this article
We will contact you within 1 working day, please pay attention to the email from SDH.
We will contact you within 1 working day, please pay attention to the email with the suffix “@sdhhardware.com”.