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Center dimension (CC) is the distance between the center points of two boreholes for e.g. handle. It is also called center/center measure. Within kitchen cabinet handles, the dimensions are usually standardized according to an increasing ladder of 32mm / size.
We offer handles with cc dimensions 32, 96, 128, 160, 192, 224, 256, 320, 352, 416 mm.

The reason knobs don't have a cc measurement is because they only have a single screw hole.

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