North Carolina Locksmith Practice Exam

The standard door preparation dimensions are commonly known as "161 Prep." This term refers to the specific preparation set by the American National Standards Institute (ANSI) for cylindrical locksets, which includes details such as the depth and diameter of the hole bored into the door, as well as the locations for the strike plate and latch. The 161 Prep ensures that locks can be installed in a standardized way, facilitating compatibility between various manufacturers' products while also simplifying the installation process for locksmiths and builders. This commonality helps maintain consistent security measures and allows for easier replacement or upgrading of locks in the future.

Other terms like Standard Cylinder Preparation, Generic Door Setup, and Universal Door Specification do not refer to a specific, universally recognized standard within the locksmithing field. While they may imply standardized practices, they do not have the same established recognition and specific technical parameters as the 161 Prep.