Delaney 4-1/2" x 4-1/2" Commercial Spring Hinges, Square Corner (Pair)

That is what they are for. The Delaney 4-1/2 x 4-1/2 spring hinge is a 3-knuckle full mortise hinge with the closing spring built into the barrel, so it pulls the door shut by itself with no overhead closer and no surface hardware on the face of the door. Where a closer is being used for controlled speed, latch check, or hold-open, a spring hinge is not a substitute for it - the spring gives you self-closing, not regulated closing.

Yes. The Delaney 4-1/2 x 4-1/2 commercial spring hinge is UL listed for use with fire rated doors, which is the reason it gets specified in the first place: a fire door has to be self-closing and self-latching, and a self-closing hinge satisfies the closing half of that with no closer on the door. Confirm your door and frame assembly's own labeling covers hinge-type self-closing devices.

An order gets you one pair, 2 hinges, packed 1 pair per box. On a commercial opening a 4-1/2 inch door normally carries three hinges, so plan on ordering two pairs per leaf and using a spring hinge in the top and bottom positions with a standard hinge between, or three spring hinges if you want more closing force. Buy the pairs to match your hinge count on the door; the box is not a per-door kit.

It fits a 4-1/2 x 4-1/2 inch square corner mortise. Square corner is the flat, right-angle cut you get on hollow metal frames and hand-mortised wood doors. If your existing hinge has rounded corners (a 1/4 inch or 5/8 inch radius, typical of machine-routed doors), it will not seat without squaring off the pocket corners with a chisel. Measure the existing leaf: 4-1/2 by 4-1/2 with sharp corners and this is a straight swap.

Spring hinge if the only requirement is that the door shuts behind people and you want nothing hanging on the door face - apartment unit doors, utility rooms, self-closing fire doors where a closer would be in the way. Ball bearing hinge plus a closer if you need controlled sweep speed, latch check, backcheck, hold-open, or ADA-compliant opening force, because a spring gives you none of those adjustments. A 4-1/2 x 4-1/2 square corner ball bearing alternative in the same size is the Orca Hardware 3535 Series commercial hinge, or for a heavier opening the Don-Jo HWBB84545 heavy weight ball bearing hinge in the same 4-1/2 x 4-1/2.

No. This is a 4-1/2 by 4-1/2 hinge and it will not fit a 3-1/2 inch mortise without cutting the pocket taller and wider on both the door and the jamb, which on a fire rated assembly you should not be doing. For a 3-1/2 inch square corner opening the fit is a hinge in that size, such as the Emtek 92013 or 94013 heavy duty pair with square corners in plated steel, or the Deltana DSB35 - but note those are standard hinges, not self-closing, so the door would need a closer to shut itself.

The Stanley Security 2060R is the closest match: a full mortise spring hinge with square corners in the same 4.5 inch by 4.5 inch size, on a ferrous steel base, rated heavy duty. Like the Delaney spring hinge, it is a self-closing full mortise hinge for commercial openings in a steel build, so it drops into the same 4-1/2 inch square corner mortise prep without rework to the door or frame.

The Delaney 4-1/2 inch spring hinge is a self-closing hinge and is not built around pin security. For an out-swinging opening where the barrel is on the exterior, the Hager BB1168 is a full mortise ball bearing heavy duty hinge with a non-removable pin, and the Deltana CSB45N is a 4-1/2 inch by 4-1/2 inch square hinge pair with a non-removable pin, matching the Delaney square corner size. The Deltana DE44R5TA is a 4 inch by 4 inch security hinge in steel.

The Delaney spring hinge has square corners, which needs a square corner mortise. For a radius prep, the Orca Hardware 4014 Series is a 4 inch by 4 inch hinge with a 1/4 inch radius corner, plain bearing, medium duty, and the Orca Hardware 3514 Series is the same 1/4 inch radius corner in 3.5 inch by 3.5 inch. The Deltana DE44R5TA is a 4 inch by 4 inch steel hinge with a 5/8 inch radius, sold as a pair. Confirm which radius your frame is cut to before ordering, since 1/4 inch and 5/8 inch are not interchangeable.

The leaves are 0.134 inch steel, which is standard commercial hinge gauge, and the hinge is catalogued as commercial rather than residential. For a normal-weight interior commercial door, a stairwell door, or an apartment corridor door it is the right build. For a heavy exterior door, a thick fire door, or a high-cycle entrance under constant traffic, a ball bearing or concealed bearing hinge carries the load better and you add a closer for the closing function.

Both are in the box. The hinges are packed with wood screws and machine screws, so a wood door hung in a hollow metal frame is covered without a second trip to the counter. You will still want your own hinge shim stock if the existing mortise is deeper than the new leaf.

No handing to specify. The Delaney 4-1/2 spring hinge is a full mortise hinge with square corners on both leaves, so the same hinge works on a left hand or right hand door; the spring tension is set on installation with the tension pin, and that is what determines which way it drives the door. Order by size and finish only.

The Delaney 4-1/2 inch spring hinge is UL listed for use with fire rated doors and provides automatic closing from the hinge itself, so it handles both the swing and the latching action on a rated opening. If the opening will use a separate door closer instead, a bearing hinge in the same 4-1/2 inch square corner prep such as the Orca Hardware 3535 Series ball bearing commercial hinge or the Don-Jo HWBB84545 heavy weight full mortise ball bearing hinge in 4-1/2 inch by 4-1/2 inch satin chrome carries the leaf, and the closing force comes from the closer.

No. The Delaney 4-1/2 inch spring hinge is a 3 knuckle full mortise hinge with a spring in the barrel for automatic closing of doors. A ball bearing hinge such as the Orca Hardware 3535 Series 4-1/2 inch by 4-1/2 inch square corner commercial hinge carries bearings to reduce friction under load; it swings freely and does not return the door. Ordering a ball bearing hinge in place of a spring hinge leaves the opening without any closing action.

The Delaney spring hinge is a commercial 4-1/2 inch by 4-1/2 inch steel hinge. On a lighter door with a smaller prep, the Deltana DSB35 is a 3-1/2 inch by 3-1/2 inch square hinge sold as a pair for residential use, and the Deltana DSB3 is a 3 inch by 3 inch square hinge pair. The Emtek 91013 is a 3-1/2 inch by 3-1/2 inch square corner plain bearing hinge pair in plated steel from the residential duty line. None of these carry a closing spring.

The Delaney spring hinge is made in one size, 4-1/2 inch by 4-1/2 inch. For a wider leaf, the Don-Jo HWBB75045 is a 5 inch by 4-1/2 inch heavy weight full mortise ball bearing hinge in steel with a satin chrome finish, and the Don-Jo HWBB85045 is the same 5 inch by 4-1/2 inch size in brass with satin chrome. Both are heavy duty and free-swinging rather than self-closing.

The Delaney is a 3 knuckle spring full mortise hinge in 0.134 inch gauge steel that closes the door on its own. The Ives 3CB1 is also a 3 knuckle full mortise hinge in steel but uses concealed bearings and is rated medium duty; the 3CB1HW is the heavy weight concealed bearing version. Both Ives hinges carry the leaf on bearings hidden in the knuckle and let the door rest at any position, while the Delaney returns it to the closed position.

It fits the same 4-1/2 inch prep but does a different job. The Stanley FBB191 is a 5 knuckle full mortise standard weight hinge in 4.5 inch by 4.5 inch, heavy duty, matching the Delaney footprint of 4 1/2 inch by 4 1/2 inch. The McKinney MP79 MacPro is another 5 knuckle standard weight full mortise option. Neither carries a spring, so on a door that must self-close you would need a separate closer, whereas the Delaney provides automatic closing from the hinge itself.

No. The Delaney spring hinge is a full mortise hinge, meaning both leaves mortise into the door and the frame. The Hager 1129 is a half mortise plain bearing commercial hinge in 4-1/2 inch standard weight steel, which mortises into the door but attaches to the face of the frame, and the Hager 990 STEEL is a full surface prison hinge, 3 inch by 4 inch with a welded tip, that mounts to the faces of both. Those mount patterns need different door and frame prep and will not go into a full mortise pocket.

Two: US26D dull chrome, the satin chrome finish that matches most commercial lever and closer hardware, and 613 satin bronze oil-rubbed for a dark, warmer opening. Pick the one that matches the lockset already on the door rather than the frame paint, since the hinge sits right beside the lever on the sightline.

The Delaney 4-1/2 inch spring hinge is a commercial steel hinge whose barrel houses the closing spring, and it is offered in US26D Dull Chrome and 613 Satin Bronze Oil-Rubbed. Where appearance drives the choice, the McKinney SQ3331 is a 4-1/2 inch by 4-1/2 inch 2-knuckle decorative hinge with a square barrel, standard duty, and the Emtek 96213 is a 3-1/2 inch by 3-1/2 inch square corner heavy duty hinge pair.