The Soss Model 218 Invisible Hinge is the perfect choice for both DIY enthusiasts and professionals seeking a sleek, durable hinge solution for wood or metal doors 1-3/4" to 2" thick. Crafted from zinc and steel with nylon links for added strength, this full-size hinge offers smooth, single-action operation and opens a full 180°. Its invisible design ensures a clean, flush look, ideal for modern or traditional doors. Rated for 20 minutes of fire resistance, it meets safety standards for use on fire-rated doors. Installation is straightforward with included wood and machine screws. Available in a stylish Satin Chrome finish, the Model 218 blends durability with elegance, making it a reliable choice for entry doors, metal frames, and wood applications. Upgrade your door hardware with this compact, high-performance hinge that combines function and aesthetics seamlessly.