Bore Hole Specifications
Bore Hole Size
A bore hole measurement refers to the diameter of the pre-drilled holes in a door where the lockset and hardware are installed. This measurement is essential when selecting a compatible lockset, as it ensures the hardware will properly fit and function within the door.
Bore Hole Measurements
Exterior Doors: 2 1/8"
Backset
The backset measurement refers to the distance from the edge of the door to the center of the pre-drilled bore hole. This measurement is important when selecting a lockset, as it ensures the correct latch size is used for proper fit and function.
Backset Measurements
Exterior Doors: 2 3/4"
Center to Center
The center-to-center measurement refers to the distance between the center of the passage (handle) bore hole and the center of the deadbolt bore hole. This measurement is important when purchasing a combination handleset and deadbolt, as it ensures both components align and function properly on the door.
Center to Center Measurement
Exterior Doors: 5 1/2"