What This Article Covers
Swing clear hinges solve a specific geometry problem: when a standard hinge would leave the door leaf partially blocking the opening at 90 degrees, a swing clear moves the door completely out of the frame opening. This guide explains the real-world situations where that distinction matters, what the 5-inch size and beveled-edge requirement actually mean for ordering, and where the spec decision gets made too late to fix easily. It is aimed at commercial contractors, facility managers handling corridor upgrades, and specifiers working through accessibility reviews.
What Is a Swing Clear Hinge?
A swing clear hinge is a full mortise butt hinge with an offset in one or both leaves. That offset shifts the pivot point outward so the door swings completely clear of the frame opening when open at 90 degrees. With a standard hinge, the door thickness itself projects into the clear opening width when the door is open. On a swing clear hinge, the door face aligns with or clears the face of the stop, eliminating that intrusion.
The functional difference is small in description and significant in the field. A 1-3/4-inch-thick door hung on standard hinges reduces the clear opening width by approximately 1-3/4 inches at 90 degrees. On a corridor that was already marginal, or on any opening subject to ADA clear-width requirements, that inch and three quarters is the difference between compliance and a punch-list item.
The Corridor Width Problem That Makes Swing Clear the Answer
The ADA requires a minimum 32-inch clear opening width for single swinging doors, measured from the face of the door to the strike-side stop when the door is open 90 degrees. On openings that are deeper than 24 inches, the minimum rises to 36 inches. Those numbers are tighter than they look on a door schedule.
Consider a standard 3-foot-wide opening with a 1-3/4-inch door on conventional hinges. At 90 degrees, the door leaf occupies part of the clear width. Depending on frame stop projection and door thickness, the actual clear measurement can fall below 32 inches even when the rough opening is nominally compliant. Swing clear hinges recover that full clear dimension by moving the door entirely out of the path.
This problem comes up most often in:
- Healthcare corridor upgrades where bed and equipment clearance is a practical daily concern, not just a code footnote
- School building renovations where existing corridor widths were built to older standards and ADA compliance is being addressed opening by opening
- Retail and light commercial tenant improvements where accessible route documentation is part of the permit package
- Restroom entries in older buildings where the rough opening cannot be widened without structural work
Why the 5-Inch Size Appears on Swing Clear Specs
Standard commercial hinges for 1-3/4-inch doors up to 36 inches wide are typically 4-1/2 inches in height. The 5-inch hinge height is called for when the door width exceeds 36 inches, when the door is heavier than the 4-1/2-inch range supports, or when the door thickness exceeds standard 1-3/4 inches.
Swing clear hinges in the 5-inch size are not unusual. A wider or heavier door needing swing clear geometry is also a door that needs more hinge bearing surface. The combination shows up on oversized corridor doors, solid-core wood doors in institutional settings, and hollow metal doors on heavier gauges. The 5-inch height handles doors in the 401-to-600-pound range and wide-leaf applications where the 4-1/2-inch hinge would be undersized.
If you are ordering from a schedule that calls out a 5-inch swing clear and you substitute a 4-1/2-inch standard hinge to save a few dollars, you have changed two things at once: the bearing capacity and the functional clear width. Both matter.
The Beveled Edge Requirement — and Why It Is Not Optional
Swing clear hinges are manufactured for either square-edge or beveled-edge doors. The standard commercial bevel is 1/8 inch in 2 inches on the lock edge. A beveled-edge swing clear hinge has its offset leaf geometry matched to that bevel so the hinge sits flush and the door operates without binding.
Ordering a square-edge swing clear on a beveled door, or vice versa, produces a hinge that either gaps or binds at the leaf. On a swing clear, where the geometry is already working harder than a standard hinge, that mismatch shows up immediately as a door that does not seat properly or one that scrapes the frame on the pull side.
When pulling a replacement swing clear in the field, confirm the door edge before ordering. Beveled-edge hollow metal doors are the commercial standard, but some older wood doors and certain specialty doors are square-edged. The edge type is easy to verify with a straightedge against the lock stile.
Where This Spec Decision Gets Made Too Late
The swing clear hinge decision should happen at the door schedule stage, not during installation. Here is why it routinely gets deferred past the right moment:
- The hardware schedule lists a standard hinge, the clear-width measurement is not checked against the ADA threshold until the accessibility review, and by then the doors are hung
- A renovation project reuses existing hinges because they look fine, and nobody verifies whether the original spec was swing clear or standard
- A replacement hinge order goes in matching only the visible dimensions — size and finish — without confirming the swing clear offset
On a retrofit opening where the door is already hung and the clear-width measurement is failing, swing clear hinges are one of the few hardware-only corrections available. The alternative is widening the rough opening, which is a significantly larger scope. That is a useful conversation to have with a facility manager or owner before the job is priced.
Ball Bearing Construction on Swing Clear Hinges
Any door with a closer requires ball bearing hinges. That applies equally to swing clear hinges. The bearing reduces friction between the knuckle leaves, which matters more on a swing clear because the offset geometry puts slightly more lateral load on the barrel than a standard in-line hinge does.
Ball bearing swing clear hinges are the correct specification for virtually any commercial opening where this hinge type is appropriate. A plain bearing swing clear on a door with a closer will wear faster at the knuckle and may begin to bind or sag before a ball bearing version would. Specify ball bearing as the baseline, not as an upgrade.
Finish Coordination at the Opening
Swing clear hinges are available in the full range of commercial architectural finishes. US26D (satin chrome over steel) is a common specification in healthcare and institutional projects where stainless-adjacent finishes are specified for cleanability and visual consistency with other hardware. Finish coordination between hinges, closers, and locksets should be confirmed at the hardware schedule stage. A swing clear hinge in the wrong finish on an otherwise consistent opening is a visible inconsistency that typically generates a substitution request at close-out.
Preferred Brands for Swing Clear Ball Bearing Hinges
DoorwaysPlus stocks swing clear ball bearing hinges from McKinney and other lines including Hager and Markar. McKinney's swing clear line covers both beveled and square-edge door applications in standard commercial sizes. If your project schedule calls for a 5-inch swing clear in US26D on a beveled door — that product is a stocked, short-lead item. Contact DoorwaysPlus for availability, quantity pricing, or if you need a comparable option from another preferred line.
Summary: The Three Questions to Answer Before Ordering
- Is swing clear actually required? Measure the clear width at 90 degrees before ordering standard hinges on any opening subject to ADA review or where corridor clearance is a functional concern.
- What is the door edge profile? Beveled or square — confirm before selecting the swing clear model.
- What is the door size and weight? That determines whether 4-1/2-inch or 5-inch is the correct height, and whether ball bearing construction is required (it almost always is on commercial doors with closers).