How to measure hinge holes for replacement doors
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These tips are only for recessed concealed hinges as shown below
- This is a typical concealed hinge used on Kitchen, Bedroom Bathroom and built in cupboards.
- They come in two sizes 35mm dia and 26mm dia hole size.
- Most hinges used are the 35mm dia.
- 26mm dia hinges are sometimes used in small bathroom cabinets or budget carcasses.
Measuring Points from top
- The sample shows the measuring points for the top hinge hole.
- The same applies to the bottom hole.
- If you have four holes we would want the distance from the top for the upper two and the distance from the bottom for the lower two.
- If a new build with 4 hole you can enter "even" if the positions aren't critical.
- For centre holes we like the measurement from the top, You can enter "cen" or "centre".
Sample Dims of a typical door hole
- Almost all front fitting cabinet doors hinge holes are centred 22.5mm from the front with a 35mm dia hole
- The height distance vary between manufacturers and must be checked.
- If the hinge is 26mm dia the hole centre should be 18mm.
Door handing for hinge holes
- The door on the left is left hung.
- The door on the right is right hung.
- If you want a top hung door we like you to select the Top Box, ideally this is the only time a Top Box is selected.
- If you have doors of the same size and some are drilled and other are undrilled can you please order these as separate panels.
Door hinge holes locations from a carcass
Working out the top hinge hole locations from a carcass
You need to know the thickness of the carcass, these are mostly 18 mm thick or 15 mm thick.
Doors are usually shorter than the carcass by 2.5 mm at the top and another 2.5 mm at the bottom. This space is for clearance of worktops etc.
Measure from the higher of the two hinge plate holes marked "A" to the under side of the carcass.
On the example this is 53.5 mm ( the hinges will have an adjustment of a few mm so half a millimetre not vital )
Add this to the carcass thickness "C", 18 mm in this example the add 16 mm
53.5 + 18 + 16 = 87.5 subtract 2.5 mm for the top door gap giving you 85 mm.
The 16 mm is for half the distance between the hinge plate holes taking you to the hinge centre line.
Almost all carcasses and cabinets use an international standard for hole sizes and spacing.
The most common hinge has a 35 mm diameter cup size and some times for small units or cheaper units a hinge with a 26 mm cup size is used.
The spacing for almost all holes in carcasses are multiples of 32 mm.