Hinges attach doors to structures or surfaces and allow them to open and close. They are used in a wide range of new construction or retrofit projects, including cabinets, gates, and multiple door overlays. Door and butt hinges are available in screw-in, weld-on, and electrified styles. Hidden barrel hinges are invisible when the door is closed to help provide a neat appearance. Lift-off hinges allow the door to be removed without having to uninstall the hinges, making them suitable for businesses that receive frequent deliveries and in high-traffic areas. Spring hinges can provide a more economical solution than automatic door closers for keeping doors closed in residential, hospitality, and healthcare facilities.