Orca Hardware 4-1/2" x 4-1/2" x Square Corner Spring Steel Hinge

A spring hinge like the SPR4545 puts the closing force in the hinge itself, so there is no closer body or arm on the face of the door. That is the right call on a door where you want the hardware out of sight and the door only needs to return to the latch. A surface closer is the better answer when you need controlled sweep and latch speed, backcheck, or an accessible opening force, because the SPR4545 is not ADA compliant. For a completely concealed option, the SOSS invisible spring closer hinges mortise into the door edge and are not visible when the door is shut.

The Orca SPR4545 spring hinge has square corners, so it will not drop into a radiused pocket without filing the mortise. For radius prep, the Hager 1251 is a full mortise spring hinge with 1/4 inch round corners and the Hager 1252 is the same hinge with 5/8 inch round corners, both standard weight steel and medium duty. Measure the existing pocket radius before choosing between the two. The BEST RD2060R is another radius corner spring hinge, medium duty with a removable pin.

The Design Hardware UL spring hinge is a medium duty UL spring hinge, and the Emtek 95013 is a UL listed spring hinge supplied as a pair in 3-1/2 inch by 3-1/2 inch with square corners in plated steel. Among the invisible closer hinges, the SOSS 216IC and the SOSS 220IC both carry a 20 minute fire rating and are heavy duty. Confirm the label requirement on the opening against the door manufacturer's listing before ordering.

The McKinney 1502 is a square corner full mortise spring hinge in 4-1/2 inch by 4-1/2 inch standard weight, medium duty, which matches the Orca SPR4545 spring hinge on size, corner style and duty level. Both are medium duty spring hinges with square corners, so a door already prepped for one takes the other without changing the mortise.

The Orca SPR4545 spring hinge is 4-1/2 inch by 4-1/2 inch. For a 3-1/2 inch prep, the Deltana DSH35R4 is a single action spring hinge, 3-1/2 inch by 3-1/2 inch with a 1/4 inch radius in steel, and the Deltana DSH35R4-A is the same 3-1/2 inch by 3-1/2 inch, 1/4 inch radius steel single action spring hinge. The Emtek 95013 is a 3-1/2 inch by 3-1/2 inch square corner spring hinge supplied as a pair in plated steel, which matches the square corner prep the Orca hinge uses at the smaller size.

The SPR4545 is sized against an 84 inch door height, which is the standard 7 foot opening. On a door that tall you typically hang three hinges, and with spring hinges the common practice is to hang the door on the number of hinges the leaf height calls for and load only as many springs as you need to pull the door shut. Doors taller than 84 inches need an additional hinge.

The SPR4545 is steel and rated medium duty, which covers commercial interior openings with normal traffic, not high-frequency entrances or heavy doors. For a heavier or more abused opening, look at a heavy duty option such as the SOSS 216IC or 218IC invisible spring closer hinges. Where you want stainless rather than plated steel, Hager's 1150 full mortise spring hinge is stainless.

Yes. Spring hinges ship unloaded and the spring tension is set on site after the hinge is mounted, using the tension pin and wrench, so the door closes and latches without slamming. Orca publishes an installation and adjustment instruction sheet for the SPR4545 spring hinge. Set every loaded hinge on the door to the same tension so the leaves are not fighting each other.

No. The Orca SPR4545 is a single opening direction spring hinge for a standard 4-1/2 inch by 4-1/2 inch square corner mortise. The Deltana DASHS is a double action saloon hinge sold each in 4 inch, 5 inch and 6 inch heights, and the Deltana DASH95 is a double action spring hinge with solid brass cover plates. Double action hinges let the door swing both ways and mount differently, so they are not a substitute on a conventional single swing opening.

For toilet partitions the Pemko Markar FM400 Series and FM900 Series are full length spring loaded continuous hinges rated to an 80 lb load, and the Pemko FS402 Series and FS902 Series are spring loaded continuous hinges for toilet partitions at the same 80 lb capacity, with the FS902 in 304 stainless steel. These run the full height of the door leaf rather than seating in individual 4-1/2 inch by 4-1/2 inch mortises the way the Orca SPR4545 does, so the partition panel prep is different.

The Orca SPR4545 spring hinge is rated medium duty. For a heavier leaf, the SOSS 218IC is a heavy duty 7 inch invisible spring closer hinge requiring a 1-3/4 inch minimum door thickness, and the SOSS 220IC is a heavy duty 7 inch invisible spring closer hinge requiring a 2 inch minimum door thickness. Both mortise into the door edge and frame rather than the face, so verify the door thickness before specifying.

The Orca SPR4545 spring hinge is steel. The Hager 1150 is a full mortise spring hinge in standard weight stainless steel at medium duty, while the Hager 1250 is the same full mortise standard weight spring hinge in steel construction, also medium duty. For a wet or coastal opening the stainless 1150 is the one to look at.

The BEST 2060R is a plain bearing spring hinge with a removable pin in square corners, standard weight and medium duty. That matches the Orca SPR4545 on square corner prep and medium duty rating while adding the removable pin, which is what a property manager wants on a unit door that comes off for turns and flooring work.

Oil-rubbed bronze is the finish on the SPR4545, which is the one to pick when you are matching dark bronze levers and pulls already on the openings. If the rest of the building runs a plated or stainless look, that finish will stand out.