Soss 218WH Heavy Duty Invisible Hinge White 1-3/4 in Doors

Product Description

The SOSS UIP ALLEGION 218WH is a heavy-duty invisible hinge designed for 1-3/4 inch thick doors. When fully closed, the hinge leaf folds entirely inside the door and frame, leaving no exposed hardware on the face of the door. This concealed design is used in residential and commercial interior door applications where a clean, uninterrupted appearance is required. The 218WH measures 1-1/8 inches in width and 4-5/8 inches in length and ships with a white finish. Installation requires a licensed carpenter or skilled finish installer and is appropriate for wood door and frame assemblies.

This hinge is suited for interior door installations where traditional butt hinges are undesirable due to aesthetic or security requirements. The invisible mounting style places all hardware inside mortised pockets routed into the door edge and frame jamb. Commercial office doors, residential interior passage doors, and cabinetry applications where a flush, hardware-free face is specified are typical use cases. The white finish coordinates with painted door and frame assemblies in both new construction and renovation projects.

Key Features

• Fully concealed design — no hinge hardware visible when door is closed
• Heavy-duty construction rated for 1-3/4 inch door thickness
• White finish for coordination with painted door and frame assemblies
• Compact leaf dimensions of 1-1/8 inches wide by 4-5/8 inches long
• Sold individually — one hinge per unit

Compatibility

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

Installation Notes

Installation requires precise mortise routing into both the door edge and the frame jamb to accept the hinge leaves; use a router with a correctly sized template for accurate pocket depth and placement. Power down any electric strike or access control hardware associated with the door before beginning installation. Follow applicable building codes and manufacturer mortise specifications to ensure proper door swing and closure. Do not force the hinge linkage during installation, as misaligned pockets can bind the mechanism.