National Hardware 4" Satin Nickel 1/4" Radius Spring Door Hinge is a durable and reliable choice for hanging self-closing doors in various settings such as basements, stairways, garages, and entrances. Crafted from cold-rolled steel, this hinge is designed to fit standard hinge cutouts and features a 1/4" radius with round corners for a sleek appearance. It is UL for fire doors, ensuring safety and compliance. The closing speed is adjustable, making it versatile for residential, commercial, and apartment buildings. This spring door hinge combines functionality with a satin nickel finish that complements many door styles. Model Number: N350-868