Master key vs grand master overview A master key opens a group of locks. A grand master key opens many groups across the whole site. Think tree branches. Change keys sit on the twigs, a master sits on a branch, a grand master sits near the trunk. Use a master for a...
Intro If your door will not latch, the cause is usually hinge sag, a misaligned strike plate, or worn parts. Start with simple checks. Tighten loose screws. Test the door while lifting on the handle. Mark the strike to see where the latch hits. Adjust hinges or move...
