The Richelieu 4″ Full Mortise Combination Adjustable Spring Hinge in Black is a versatile hinge designed for doors requiring automatic closing. It features an adjustable spring mechanism that controls the door’s closing speed and force. This hinge is full mortise, meaning it is designed to be installed flush with the door and frame for a clean and seamless look. The black finish complements a variety of interior styles, offering both functionality and aesthetic appeal. It is ideal for residential and commercial applications where self-closing doors are desired, providing convenience and enhancing security. Built with durability in mind, the Richelieu CRBL hinge ensures reliable performance and long-lasting operation.