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Browse our selection of 4" door hinges with a 1/4" radius corner — designed for doors or frames mortised for rounded-corner hinges. This hinge size offers a balanced combination of coverage and support for many residential and light-duty applications. Fast shipping from DoorCorner.com.
Why hinge radius matters: the corner shape of the hinge leaf must match the shape of the mortise in the door or jamb. A 1/4"-radius hinge features gently rounded corners that sit flush in a rounded mortise. Using a square-corner hinge in a radius-cut mortise can result in poor fit, visible gaps, or additional chiseling.
Common uses for 4" hinges: these hinges are often chosen for interior doors, closets, storage rooms, and light exterior doors where a slightly larger hinge than 3-1/2" is preferred for added stability or support.
Fit tips before ordering: measure the height of your existing hinge (top to bottom) to confirm the 4" size, and visually check the hinge corners to confirm a 1/4" radius. Matching both the hinge size and radius helps ensure a clean fit and straightforward installation.
What does “1/4" radius” mean on a door hinge?
“1/4" radius” refers to the rounded corners of the hinge leaves. Instead of sharp 90° edges, the corners are curved with a 1/4-inch radius so the hinge sits flush in a rounded mortise.
Why is the radius shape important when installing hinges?
Using the correct radius ensures proper hinge seating, helps maintain even door gaps, and allows smooth door operation. An incorrect radius can cause misalignment, uneven edges, or require additional door or frame modification.
Are 4" hinges with a 1/4" radius suitable for standard residential doors?
In many cases, yes. These hinges are commonly used on standard interior doors and light exterior doors, provided the door and frame are mortised for a 1/4" radius and the door weight falls within recommended limits.
When should I choose a 4" hinge instead of a 3-1/2" hinge?
Choose 4" hinges when your existing mortises are sized for 4" leaves, when added support or stability is desired, or when replacing original 4" hinges to ensure proper fit and smooth door operation.
