The Deltana 4" x 4" Plain Bearing Mortise Hinge is designed for residential use with a traditional black finish. This pair of hinges features a full inset hinge mount with a 5/8" radius corner design. Made of durable steel with a gauge of 0.085, they have a hinge length and width of 4 inches and a height of 4 inches. The hinges have a plain bearing configuration with 5 knuckles and a zig-zag hole pattern, making them suitable for doors with a door hinge installation type. The removable pin and included wood screws make installation easy for a variety of door applications.