Soss 218US5 Heavy Duty Invisible Hinge Antique Brass

Product Description

The SOSS / UIP ALLEGION 218US5 is a heavy duty invisible hinge designed for 1-3/4 inch thick doors in residential and light commercial applications. When the door is closed, the hinge is completely concealed within the door and frame, leaving no visible hardware on the face. This design provides a clean, uninterrupted appearance along the door edge. The 218US5 features an antique brass finish and is built to handle the demands of heavy door use. Licensed HVAC, plumbing, and electrical trades aside, this hinge is primarily installed by finish carpenters, millwork contractors, and general contractors working on interior door projects.

The 218US5 is suited for interior door installations where a concealed hinge is required or preferred for aesthetic or security reasons. It fits 1-3/4 inch thick doors and provides a mortised, flush-mount installation. The antique brass finish makes it appropriate for traditional or transitional interior settings. It is sold individually and is commonly specified in custom millwork, cabinetry, and high-end residential door installations where exposed butt hinges are not desired.

Key Features

• Fully concealed design — hinge is invisible when the door is closed
• Designed for 1-3/4 inch thick doors
• Antique brass finish for traditional interior applications
• Heavy duty construction for demanding door use
• Sold as a single unit (each)

Compatibility

Designed as an OEM-style replacement or new-installation invisible hinge for 1-3/4 inch thick interior doors requiring a fully concealed mortise hinge.

Installation Notes

Installation of invisible hinges requires precise mortising into both the door edge and the door frame jamb. A router with a correctly sized template is the standard tool for achieving the required mortise depth and profile. Verify door thickness matches the hinge specification before mortising. Follow applicable local building codes for door hardware installation in commercial settings.