Soss 216US19 Invisible Hinge Medium Duty Black Finish

Product Description

The SOSS UIP Allegion 216US19 is a medium-duty invisible hinge designed for interior doors where a clean, hardware-free appearance is required. When the door is closed, the hinge is completely concealed within the door and frame, leaving no exposed barrel or leaf on the face. The 216US19 measures 1 inch in width by 4-5/8 inches in length and is finished in black. It is suited for doors measuring 1-3/8 inches thick. Carpenters, finish contractors, and door hardware installers typically specify this hinge on residential and light commercial projects where aesthetics require that hinge hardware remain invisible from the room side.

This hinge is used in residential and light commercial applications where surface-mounted butt hinges are not acceptable from a design standpoint. Typical installations include interior passage doors, closet doors, and architectural millwork panels measuring 1-3/8 inches in thickness. The black finish makes it compatible with dark hardware schemes. It is sold individually as a single unit, so the number of hinges required per door should be calculated based on door height and weight per standard carpentry practice.

Key Features

• Fully concealed when door is closed — no exposed barrel or hinge leaf visible from either side
• Medium-duty construction suitable for 1-3/8 inch interior doors
• Black finish for compatibility with dark architectural hardware
• Compact profile: 1 inch wide by 4-5/8 inches long
• Sold as a single unit (EA) for flexible quantity ordering

Compatibility

Designed as a drop-in invisible hinge replacement for interior doors with a 1-3/8 inch door thickness. Consult door and frame manufacturer specifications to confirm mortise dimensions before ordering.

Installation Notes

Invisible hinges require precise mortise routing in both the door edge and the door frame jamb — a router and hinge template are standard tools for this work. Power to any electric strike or access control hardware in the opening must be disconnected before beginning door work. Follow applicable building codes for door hardware installation in commercial occupancies. Do not force the hinge into an undersized mortise, as this can crack the door edge or prevent proper closure.