Choosing the perfect interior door handle involves more than style. An incorrect size leads to installation headaches, unnecessary extra holes, or a wobbly finish. This guide demystifies the key dimensions and provides a clear measurement method, ensuring your new hardware fits flawlessly.
Understanding the Critical Dimensions
When selecting a door handle, focus on these core specs of your door hardware:
Cross Bore Diameter: The large hole (usually 35mm or 54mm) in the face of the door for the lever/knob.
Backset: The distance from the center of the cross bore to the edge of the door. The most common standards are 44mm (1-3/4″) and 57mm (2-1/4″) for interior doors. This is crucial for the latch to align correctly with the strike plate.
Door Thickness: Standard interior doors are typically 35mm to 45mm thick. Handle spindles and screws must be suitable for this range.
How to Measure Your Door in 4 Steps
Follow this process before purchasing:
Determine the Backset: Remove your current handle. Measure from the edge of the door to the center of the large cross bore.
Measure the Bore Holes: Note the diameter of the cross bore on the door’s face and the smaller edge bore for the latch.
Check the Door Thickness: Measure directly at the door edge.
Check Existing Hardware: If replacing, ensure new screws align and that the base plate covers any old marks. A mismatched setup can strain door hinges over time.
Pro Tips for a Perfect Fit
For New Doors: Pre-drilled doors usually follow the 44mm or 57mm backset standard. Confirm with your supplier.
Consider Full Hardware: A smooth-operating door relies on all components. Ensure sturdy door hinges and consider a quality door stopper to protect handles and walls.
When in Doubt, Consult a Pro: Brands like YALIS offer detailed spec sheets for all products. If your measurements are non-standard, our technical team can recommend compatible handles or custom solutions to integrate seamlessly with your existing door hardware.
Why Precision Matters with YALIS
At YALIS, we engineer our interior door handles to meet international standards while ensuring superior finish and durability. Proper measurement guarantees not just easy installation but also long-term reliability and aesthetic harmony in your space.
FAQ
Q: I measured a 60mm backset. Is this standard?
A: A 60mm backset is less common for interior doors but may exist. We recommend verifying the measurement. YALIS offers select models with adjustable latches or can advise on suitable solutions.
Q: Can I install a new handle if my door has old, extra holes?
A: Yes, if the new handle’s mounting plate (escutcheon) is large enough to cover them. Many YALIS handles feature oversized plates for this exact scenario.
Q: My door is thicker than 45mm. Will standard handles work?
A: You may need longer spindle screws. Most YALIS handles come with screws suitable for standard thickness, but we supply longer screws upon request to ensure a secure fit.
Q: Does the handle style affect the required door preparation?
A: Yes. A lever-on-rose style typically needs one cross bore. A lever-on-backplate might require precise screw spacing. Always check the product’s template before drilling.
Q: How does door hardware affect the handle’s function?
A: The entire system works together. A misaligned latch due to incorrect backset can cause sticking, putting stress on the door hinge and causing premature wear on both the handle and the strike plate. Correct sizing ensures smooth operation.
Post time: Jan-20-2026