Soss 103CUS19 Invisible Hinge Light Duty Black Finish

Product Description

The SOSS UIP ALLEGION 103CUS19 is a light-duty invisible hinge designed for interior doors with a 0.75-inch door thickness. When installed, the hinge is completely concealed within the door and frame, leaving no exposed hardware on the face of the door. This makes it a preferred choice for finish carpenters, millwork installers, and cabinet makers working on architectural woodworking projects where a clean, hardware-free appearance is required. The hinge ships as a pair and is finished in black. Its compact profile fits within a mortised pocket routed into both the door edge and the frame jamb.

The 103CUS19 is suited for residential and light commercial interior door applications where aesthetics and concealment are priorities. It is intended for lighter-weight doors up to 0.75 inches thick. Typical installations include passage doors, closet doors, and cabinet doors in settings where traditional butt or barrel hinges would interrupt the visual plane of the door surface. The black finish integrates cleanly with dark-stained wood, painted frames, and modern interior hardware schemes.

Key Features

• Fully concealed design — no visible hinge hardware when door is closed
• Light-duty construction suited for standard interior doors up to 0.75 inches thick
• Black finish for compatibility with dark hardware and modern interior aesthetics
• Sold as a pair, allowing single-door installation with one package
• Compact mortised profile integrates into door edge and jamb without surface-mount hardware

Compatibility

Designed as an OEM-style replacement or new-installation invisible hinge for light-duty interior doors with a 0.75-inch thickness.

Installation Notes

Installation is typically performed by a finish carpenter or millwork professional using a router or dedicated hinge mortising jig to cut precise pockets in the door edge and frame jamb. Accurate mortise depth and alignment are critical to proper swing and door closure. Power down any associated door hardware or access control systems before servicing door assemblies in commercial applications. Follow local building codes for door hardware requirements in occupied spaces.