Closer, Hinge, Pivot, or Latch: Naming the Parts of a Commercial Door

A door closer controls how a commercial door swings shut, hinges or pivots carry the door's weight and let it rotate, and the latch holds it closed. Look for the closer as a metal body and arm at the top, or hidden in the header or floor. Hinges run along one side edge; pivots sit at the top and bottom corners. The latch sits in the opposite edge and catches the frame.

What the door closer does

A door closer brings an opened door back to the frame at a controlled speed. Inside the closer body, a spring stores energy as the door opens and a fluid-filled chamber slows the return. The closer carries none of the door's weight and does not lock anything.

On many doors the closer is a rectangular metal body at the top of the door or on the frame above it, with a folding arm. Glass and aluminum storefront doors often hide the closer in the floor or in the header, the frame piece above the door, leaving only a short arm or spindle visible.

How is a hinge different from a pivot?

Hinges and pivots both carry the door and let it rotate. The difference is where the turning point sits.

A hinge mounts on the side edge of the door and the matching face of the frame. Look down that edge for two or more sets of flat plates, called leaves, joined by a rounded knuckle and pin. Some doors use one long continuous hinge instead.

A pivot puts the turning point at the top and bottom of the door, with a fitting at the top corner and another near the floor. Pivots are common on storefront and aluminum doors. Where a floor closer is used, it often doubles as the bottom pivot. Revolving doors use the same idea at a larger scale, turning on a central post.

Leaves and knuckles running down the edge mean hinges. Fittings at the top and bottom corners, with no leaves along the edge, mean pivots.

The latch is what holds the door shut

A latch is the part that keeps a closed door from swinging open. A latch bolt, a short piece of metal that projects from the door's edge, catches in the strike, the plate or pocket on the frame, until a handle, push bar, or key pulls it back.

The latch usually sits in the edge opposite the hinges or pivots, around handle height. On some push-bar doors, rods run to latch points at the top and bottom instead, which puts latch hardware right beside the pivots and closer.

The latch and the closer are separate parts. A door can swing shut smoothly under the closer and still not stay shut if the latch never engages the strike.

Where the names usually get crossed

The closer often gets called a hinge. Both are metal pieces near where the door turns, and an overhead arm folds somewhat like a hinge. A request that says hinge sends the repair team to the side edge when the part in question sits at the top.

A pivot also gets called a hinge, since people use that word for any turning point. A pivot-hung storefront door has no hinges at all, so the word leaves the repair team guessing which corner you mean.

Blaming the closer for a door that won't stay shut is the third mix-up. The closer is the visible moving part, so it takes the blame for anything at the end of the swing, but holding the door shut is the latch's job.

Naming the part when you describe a door

A useful description gives location first, then motion, then the part name if you know it:

• Location: top, side, bottom, or edge, and which door if there is a pair.
• Motion: opening, swinging closed, the last few inches of travel, or staying shut.
• Part name, or a plain description such as a metal box with an arm at the top, or a fitting at the bottom corner near the floor.

A plain description beats a confident wrong name, because a repair team can work out the part from where it sits. Adjusting or replacing any of these parts is work for a door hardware technician. For questions about the hardware on a commercial or storefront door in New York City, call Liberty Door Supply at (347) 928-7349.

Frequently asked questions

Can a door have both a hinge and a pivot?

A commercial door is normally hung on hinges or on pivots, not both. Some pivot-hung doors add an intermediate pivot partway up the edge, which can look like a hinge at a glance. If you see fittings at both corners and one on the edge, describe all three locations.

Is the door closer the same thing as the latch?

No. The door closer controls the swing and sits at the top of the door, in the header, or in the floor. The latch holds the door shut and sits in the edge. A closer issue shows up while the door is moving; a latch issue shows up once the door reaches the frame.

Does a glass or aluminum storefront door use the same parts as a standard door?

A glass or aluminum storefront door needs the same three jobs done: controlled closing, support and rotation, and holding shut. Narrow aluminum frames and all-glass doors leave little room for surface-mounted hardware, which is why storefront closers and pivots are so often tucked into the header, the floor, or the frame itself.