잠금 설치 훈련 원조.
A lock installation training aid. The training aid includes a door having a front surface, a rear surface and an edge having a top a bottom, a first side and a second side. A first cutout is formed at the edge. A first bracket is secured to the door adjacent to the first cutout. A first door insert is disposed within the first cutout and is secured to the first bracket by fasteners.