Roto is meeting rising demand for aluminum doors with clean lines and concealed hinges with the Roto Solid C concealed hinge for aluminum doors up to 308 pounds. The FixClick function allows for efficient installation. Instead of mounting the leaves with screws, a single click fixes the leaf in place, aided by locking wedges secured in the frame hinge. Solid C concealed hinges come in black and silver, while the turn restrictor is available in black and polished stainless steel.