A door is an interior element that covers a doorway. Doors are categorized based on their purpose into interior doors, entrance doors, and technical doors.

Door accessories encompass all the accessories used in the installation and operation of doors. Door accessories include door hinges, locks, handles, peepholes, and more. This category also includes elements for the automatic control of doors and gates.

Gates are structures installed in a wide opening (passage) in a wall or fence. There are various types of gates, depending on their purpose and design. Gates can also be made from different materials.