Short Answer
Complete Explanation
In cabinet hardware terminology, center-to-center (CTC) denotes the linear distance between the geometric centers of the two mounting holes on a pull or handle. The measurement is taken along the axis that the pull will travel when opened, usually horizontally for drawer pulls and vertically for door handles. CTC is a critical dimension because it determines whether a specific pull will align correctly with pre‑drilled holes in a cabinet or drawer front.
- How it is measured:
Using a ruler or caliper, place one tip at the centre of one mounting hole and the other tip at the centre of the opposite hole. The reading is the CTC value, commonly expressed in inches or millimetres. - Standard sizes:
Manufacturers frequently produce pulls in standard CTC increments such as 3″, 4″, 5″, 6″ (76 mm, 102 mm, 127 mm, 152 mm). Selecting a standard size simplifies replacement and ensures compatibility with most cabinet kits. - Relation to edge distance:
Edge distance (the distance from the centre of a hole to the nearest edge of the cabinet front) works together with CTC to define the overall placement of a pull. Both dimensions must be considered during design and retrofit. - Impact on aesthetics:
Consistent CTC across all drawers and doors creates visual harmony, especially in kitchens and bathrooms where uniformity is a design goal. - Installation considerations:
When retrofitting, the existing holes may not match the CTC of the new hardware, requiring drilling new holes or using adapter plates.
Common Misconceptions
Center-to-center is the same as the overall length of the pull.
CTC measures only the distance between mounting holes, not the total visible length of the hardware.
All pulls with the same CTC will look identical.
Pulls can have the same CTC but differ in style, finish, and projection, affecting appearance despite identical hole spacing.
FAQ
How do I measure center-to-center on an existing pull?
Place a ruler or digital caliper so that one end aligns with the centre of one mounting hole and the other end aligns with the centre of the opposite hole. Record the distance; this is the CTC measurement.
Can I use a pull with a different CTC than the existing holes?
Yes, but you will need to drill new holes to match the pull's CTC or use an adapter plate that relocates the mounting points to the required spacing.
Why do some manufacturers list both CTC and overall length?
CTC ensures the hardware fits the pre‑drilled holes, while overall length describes the visual projection of the pull. Both dimensions help designers select hardware that meets functional and aesthetic requirements.
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