Cal-Royal NEWSH454 Full Mortise Standard Weight Spring Hinge, 4 1/2" x 4" - Template - Box Of 2

The Cal-Royal NEWSH454 is a full mortise standard weight spring hinge measuring 4-1/2" x 4" in .134 gauge steel or stainless steel, sold in a box of 2. It's a template hinge for doors that need self-closing action without a separate door closer, commonly specified on fire-rated door openings, stairwell doors, and utility corridor doors where building code requires the door to return to the closed position after each use. The package ships with all machine screws and one half wood screws included.

What full mortise spring hinges do and where they're specified

A spring hinge uses a coil spring built into the barrel to provide closing tension whenever the door is opened. Unlike a standard ball-bearing hinge that simply allows the door to swing freely, a spring hinge actively returns the door toward the closed position as soon as the opening force is removed. Full mortise means both the door leaf and the frame leaf are mortised into their respective surfaces, creating a flush-mounted installation on both sides of the door edge and frame.

Spring hinges are specified in two primary situations. The first is fire-rated door assemblies where the Authority Having Jurisdiction or the fire door manufacturer's listing requires the door to be self-closing but where a full overhead door closer is not part of the hardware specification. The second is interior doors in light commercial and institutional settings where self-closing is operationally necessary but a closer would add unwanted resistance. Spring hinges handle both situations at lower hardware cost and with simpler installation than a mounted closer. Standard weight is the classification for doors within the normal residential and light commercial weight range, as distinct from heavy weight spring hinges specified for oversized or unusually heavy doors.

Dimensions, gauge, and screw configuration

The NEWSH454 measures 4-1/2" tall by 4" wide, which is a standard commercial hinge size compatible with most 1-3/4" commercial doors. The .134 gauge is the standard weight classification for this size hinge and is appropriate for standard commercial hollow metal and solid wood doors in the normal weight range. The hinge has 8 holes total, 4 per leaf, using 1-1/4 x 12 wood screws and 1/2 x 12-24 machine screws. The box includes all machine screws and half the wood screws, covering the hardware needed for installation on metal or wood door and frame combinations.

Template sizing means the hole pattern on the NEWSH454 aligns with standard commercial template-prepared doors and frames. Template prep is the standard door preparation for commercial steel doors and hollow metal frames, so the NEWSH454 drops in without field drilling or modification on any template-prepped opening. Two hinges ship per box, which is the standard quantity specification for a single door leaf installation alongside a third conventional hinge.

Finish options and installation pairing

The NEWSH454 is available in multiple finishes including US26D satin chrome, US32D satin stainless, US3 bright brass, US10B oil rubbed bronze, US1 flat black, US10A antique bronze, and US26 bright chrome, among others, to coordinate with the surrounding door hardware package. Spring hinges are typically installed in pairs alongside one standard hinge on a three-hinge door, with the spring hinges positioned at the top and bottom. Tension is adjustable on the spring mechanism to control closing speed and force within the range the hinge supports. For the full range of Cal-Royal spring hinge models including heavy weight and stainless options, browse the Cal-Royal spring hinges category. The complete spring hinges section covers coordinating models from other manufacturers. For openings that require a separate door closer rather than spring hinges, those are available on this site as well.

Select your finish when ordering. The NEWSH454 is the 4-1/2" x 4" standard weight model. Verify your door weight falls within the standard weight range before specifying.