Soss 208US4 Invisible Hinge Medium Duty Satin Brass

Product Description

The SOSS 208US4 is a medium-duty invisible hinge designed for interior doors up to 1 inch thick. When the door is closed, the hinge is completely concealed within the door and frame, leaving no exposed hardware on either face. This makes it a preferred choice for high-finish millwork, custom cabinetry, and architectural door installations where a clean sight line is required. The hinge measures 4.4 inches in length and installs flush with a routed mortise in both the door edge and the jamb. It ships with a satin brass finish. Licensed carpenters, finish millwork contractors, and door hardware specialists are the primary installers.

The 208US4 is suited for residential and light commercial interior door applications where concealed hardware is specified. It is appropriate for doors up to 1 inch in thickness and is commonly installed on passage doors, closet doors, and interior architectural doors where visible hinge barrels are undesirable. The satin brass finish coordinates with matching lever sets, pulls, and other hardware in brass or gold-tone families.

Key Features

• Fully concealed when door is closed — no exposed barrel or knuckle
• Medium-duty construction rated for interior doors up to 1 inch thick
• Satin brass finish for coordination with brass-tone hardware sets
• Compact folded profile: 4.4 inches long, 2.7 inches wide, 0.9 inches thick
• Sold individually (each) — order quantity of 1
• Lightweight at 0.4 pounds per hinge

Compatibility

Designed as an OEM-style replacement or new-install invisible hinge for interior doors up to 1 inch in thickness requiring fully concealed hardware.

Installation Notes

Installation requires precise mortise routing in both the door edge and the door frame jamb; use a router template sized for this hinge model to ensure accurate placement. Remove the door from any existing hardware and work on a stable surface before beginning the mortise cut. Follow all applicable building and finish carpentry standards for door hardware installation. A licensed finish carpenter or door hardware installer should perform or verify the installation to ensure proper swing clearance and hinge alignment.