A moulded door has the same structure as that of flush door. The only difference is that the surface material is a moulded skin made of HDF / MDF. It is commonly used as interior doors.
A ledge and brace door is a door made from multiple vertical planks fixed together by two horizontal planks (the ledges) and kept square by a diagonal plank (the brace).
A wicket door is a normal sized door built into a much larger one, such as the gate of a city or castle.
A bifold door is a door unit that has several sections, folding in pairs. Wood is the most common material, and doors may also be metal or glass. Bifolds are most commonly made for closets, but may also be used as units between rooms.
Many older homes have interior pocket doors, which slide into the wall when fully opened. They allow you to completely open the doorway without taking up any floor space. Pocket doors are making a comeback; many styles are available, single and double. A pocket door requires wall space that cannot have electrical or plumbing lines running through it.
A false door is a wall decoration that looks like a door. In ancient Egyptian architecture, this was a common element in a tomb, the false door representing a gate to the afterlife. They can also be found in the funerary architecture of the desert tribes (e.g., Libyan Ghirza).
A trapdoor is a door that is oriented horizontally in a floor or ceiling, often accessed via a ladder.
Blast-proof doors are constructed to allow access to a structure but also to provide protection from the force of explosions.
A garden door is any door that opens to a garden or backyard. It is often used specifically for double French doors in place of a sliding glass door. In such a configuration, it has the advantage of a very large opening for moving large objects in and out.
A pet door (also known as a doggy door or cat flap) is an opening in a door to allow pets to enter and exit without the main door being opened.
A Dutch door or stable door is divided in half horizontally. Traditionally the top half can be opened to allow a horse or other animal to be fed, while the bottom half remained closed to keep the animal inside.
Saloon doors are a pair of lightweight swing doors often found in public bars, also known as cafe doors, often use bidirectional hinges which close the door regardless of which direction it is opened by incorporating springs.
A blind door is a door with no visible trim or operable components. It is designed to blend with the adjacent wall in all finishes, and visually to be a part of the wall, a disguised door.
A barn door is a door characteristic of a barn. They are often/always found on barns, and because of a barn's immense size doors are subsequently big for utility