What is Center-to-Center on Design Elements™ from Yale®?
The term ‘Center-to-Center’ generally refers to the measurement or spacing between 2 face bores on a door. This is for doors that will have a bore for a deadbolt as well as an operating lock. It is referred to as ‘Center-to-Center’ because the measurement is made from the center point of the bottom bore hole to the center point of the top bore hole.
