218 Series Invisible Hinge

Finish:

The SOSS Invisible Hinge Series 218/418 are designed for 1-3/4″ to 2″ thick materials, providing reliable performance for full-size residential and commercial door applications.

Available options include:
-20-minute fire-rated (model #218)
-90/180-minute fire-rated (model #418)
-Fire-rated invisible closer hinges with 20-, 90-, and 180-minute ratings
-Hercules hinges for large or extra-heavy doors
-Power transfer rated at 2.5 amps at 24VDC
-Zinc, alloy steel, or Grade 316 stainless steel base materials

These versatile hinges can be used with solid- or hollow-core wood and metal doors, making them an ideal solution for a wide range of residential and commercial applications. Explore the benefits and available options below.

SOSS Finish Options

Each hinge model is available in a variety of finishes, including 316 stainless steel options for enhanced durability and corrosion resistance. View the available finishes for each model on its product page. Don’t see the finish you need? Contact us to explore additional options.

Finish

An Engineering Marvel—See How Our Hinges Move

Curious how SOSS hinges work? Explore this interactive model to see our hinge in motion and view it from every angle with a full 360° perspective. Press play, then click and drag to rotate the image and experience the precision and beauty of our invisible hinges.

Hiding in Plain Sight

For more than 100 years, SOSS Invisible Hinges have helped create seamless, concealed spaces that protect what matters most. Design a hidden safe door, conceal your TV behind artwork, or disguise an unsightly access panel—the possibilities are nearly endless.

Wherever you use SOSS Invisible Hinges, the result is the same: a beautifully concealed solution that’s not so easy to find.