Concealed hinges, also known as hidden hinges, are hardware components used to attach doors to frames while remaining out of sight when the door is closed. This design provides a clean and streamlined appearance, making them popular in modern cabinetry and furniture. These hinges allow for smooth door operation and can be adjusted for alignment after installation. They are commonly used in kitchen cabinets, wardrobes, and office furniture, offering both aesthetic appeal and functional benefits by keeping the hinge mechanism hidden from view.