Technical Foundation
What Is a Concealed Hinge?
A concealed (European-style) hinge mounts into a drilled cup hole in the door (standard diameter 35mm) and attaches to a mounting plate fixed inside the cabinet frame, so the hinge body sits entirely hidden between the door and frame when closed. The hinge arm connects cup to mounting plate through a linkage that allows three-way adjustment after installation — height, depth (reveal), and side-to-side — letting installers fine-tune door alignment without removing and reinstalling the hinge.
Overlay type describes how the door sits relative to the cabinet frame: full overlay (door fully covers the frame edge, adjacent doors nearly touch), half overlay (used where two doors share one intermediate frame member, each door covering half the mounting surface), and inset (door sits flush within the frame opening, requiring a differently-shaped hinge cup and arm than overlay styles). Opening angle (commonly 100-170 degrees) and soft-close damping (integrated hydraulic or added separately) are selected based on cabinet clearance and desired closing feel.
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| Spec | What It Means | Why It Matters |
|---|---|---|
| Cup Diameter | 35mm standard (26mm/40mm also used) | Must match the drilled cup hole size in the door — not adjustable after drilling |
| Overlay Type | Full overlay, half overlay, inset | Determined by cabinet construction and door position relative to the frame — not interchangeable without changing the door layout |
| Opening Angle | 95°, 110°, 125°, 170°+ wide-angle | Must clear adjacent doors, drawers or cabinet interior features when fully open |
| Soft-Close Function | Integrated hydraulic damper vs. standard (non-damped) hinge | Soft-close prevents door slam but adds cost and requires periodic damper inspection over years of use |
| Mounting Plate Type | Screw-on, clip-on, and various offset/height plates | Plate offset must match cabinet frame construction for correct final door alignment |
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Applications
Where Concealed Hinges Get Used
Concealed hinges are specified anywhere a cabinet or furniture door needs a hidden, adjustable hinge rather than a visible surface-mounted hinge.
Kitchen Cabinet Manufacturing
High-volume concealed hinge installation across full-overlay cabinet door and drawer front assemblies.
Custom Furniture & Cabinetry
Fine three-way adjustment supporting precise door reveal and alignment in custom-built casework.
Commercial Millwork
Wide-angle and heavy-duty concealed hinges for high-cycle commercial cabinet and storage applications.
Bathroom Vanity & Storage Manufacturing
Soft-close concealed hinges providing quiet, controlled door closing in residential fixtures.
RV & Marine Cabinetry
Compact concealed hinges in space-constrained built-in storage subject to vibration.
FAQ
Concealed Hinges Questions, Answered
What does 'overlay' mean when selecting a concealed hinge?
Overlay describes how the door sits relative to the cabinet frame opening. Full overlay means the door fully covers the frame edge (common in modern frameless cabinetry). Half overlay is used where two adjacent doors share one center frame member, each door overlaying half of it. Inset means the door sits flush inside the frame opening rather than overlapping it — each requires a differently configured hinge and cup/arm geometry.
How do I know what cup diameter I need?
35mm is the standard cup diameter for most residential and commercial cabinet hinges, but some lighter-duty or specialty applications use 26mm or other sizes. Check your existing hinge (if replacing) or your cabinet door's drilled cup hole diameter — the replacement hinge's cup must match exactly since the hole isn't adjustable after drilling.
What can I adjust on a concealed hinge after it's installed?
Most concealed hinges allow three-way adjustment: height (door up/down), depth or reveal (door in/out relative to the frame), and side-to-side (lateral position). These adjustments are made with a screwdriver through access points on the hinge arm and mounting plate, without removing the hinge, letting installers fine-tune alignment across multiple doors.
Is soft-close a feature of the hinge, or a separate add-on?
Both options exist — many concealed hinges now integrate a hydraulic damper directly into the hinge body that slows the door in the final few degrees of closing. Separate soft-close dampers can also be added to a standard (non-soft-close) hinge as an add-on unit mounted inside the cabinet, which is a common upgrade path for existing cabinetry.
What opening angle do I need for my cabinet?
Standard concealed hinges commonly offer 95-125 degree opening angles, sufficient for most cabinet doors. Wide-angle hinges (up to 170+ degrees) are used where the door needs to swing further open to clear an adjacent pulled-out drawer, an interior fixture, or to allow full unobstructed access to the cabinet interior.
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