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    • Soss Hinges

    Soss Invisible Hinges: The Master of Concealed Aesthetics

    When the design requires a clean, seamless look without visible hardware, Soss Invisible Hinges are the only choice. Invented in 1903, Soss hinges are mortised into the door and frame, remaining completely hidden when the door is closed. This provides not only a sophisticated, high-end aesthetic but also superior security, as the hinge cannot be tampered with from the outside.

    We carry the full range of Soss hinges, from miniature cabinet hinges to heavy-duty fire-rated models for commercial doors. Available in premium finishes like Satin Chrome, Oil Rubbed Bronze, and Black, Soss hinges allow for a 180-degree opening and a flush finish that standard butt hinges simply cannot match. When the hardware needs to disappear, it has to be a Soss.

    PRO TIP: Precision Mortising

    Installing Soss hinges requires precise pocket mortising. To ensure a perfect fit and save hours of hand-chiseling, always use the Soss Router Guide Template. It ensures the hinge sits perfectly flush, which is critical for the "invisible" effect and smooth door operation over time.

    Soss invisible hinges ship from our warehouses across America. Concealed hardware specialists for architects, designers, and high-end builders.

    Model Duty Rating Door Weight Best For
    200 Series Light Duty Up to 20 lbs Cabinets / Panels / Furniture
    400 Series Standard Duty Up to 60 lbs Interior Doors / Residential
    500 Series Heavy Duty Up to 300 lbs Commercial / Heavy Doors
    Fire-Rated UL Listed Per Rating Fire-Rated Openings

    Top Sellers

    • Shop Soss 400 Series Standard Door Hinges
    • Shop Soss 500 Series Heavy-Duty Hinges
    • Shop Soss Router Guide Templates

    Soss Resource Hub

    Soss Invisible Hinges FAQ

    How do Soss invisible hinges work?

    Soss hinges use a multi-bar linkage mechanism that is mortised into matching pockets in the door edge and the frame. When the door is closed, the entire hinge retracts into the pockets, leaving no visible hardware. This creates a completely clean sightline from the exterior side of the door.

    Can Soss hinges be used on fire-rated doors?

    Yes. Soss offers UL-listed fire-rated invisible hinges that meet code requirements for fire-rated openings. These models provide the same concealed aesthetic while maintaining the fire-resistance rating of the door assembly.

    Do I need a special template to install Soss hinges?

    While not strictly required, the Soss Router Guide Template is strongly recommended. It clamps to the door edge and guides your router to cut the exact pocket shape needed for a flush fit. Without it, achieving the precision required for the invisible effect is extremely difficult and time-consuming.

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