3.5" sn sc door hinge. Stanley-National boxed hinges catalog model No. 741. Residential door hinge is designed for use on lightweight residential doors in low-frequency applications. Square corner. Nonrising removable flush pin. 5-knuckle full-mortise design. Made of steel. 2 per pack. Boxed. 3-1/2" x 3-1/2" satin nickel