Parts of a door

There are several parts of a door in the house, these parts are basic need for entering and exiting a building or occupied space.

The most common parts in a door are door hinges, a door-knob assembly, the door panel and door frame on which the door hangs.

A door is a movable barrier generally known as a doorway through a building wall or partition, for the purpose of offering access to the inside of a building or building room.

It is placed in a position by the door frame, whose members are located over and above the opening or doorway.

Different parts of a door:

Door Frame:

The frame consists of an assembly of horizontal and vertical members, fastened with topsides and the lower part of an opening in the form of an enclosure in which the shutters are fixed.

Door frames are made of the following materials:

  • Timber
  • Steel section
  • Aluminum section
  • Concrete
  • Stone

Amongst all, wooden frames are usually used whereas steel frames are widely used in factories, workshops, etc.

Aluminum frames are expensive used for residential buildings where more funding is available.

Concrete frames are now becoming popular in urban areas whereas concrete frames are found at less than half the cost of a teakwood frame.

Stone frames are mostly used in villages.

Door Shutter:

These are open able parts of a door, it is an assembly of styles, panels and rails.


The uppermost horizontal part of the frame is known as head.


These are the horizontal projections of the head and bottom to facilitate the fixing of the frame on the wall openings.

The length of horns is kept about 10 to 15 cm.


It is the vertical outside member of the shutter of a door.

Top rail:

The topmost horizontal member of a door shutter.

Lock rail:

The centre horizontal member of the shutter.


The lower enclosed between the adjoining rails.

Hold fast:

These are mild steel flats, usually bent into Z-shape to carry the frame to the opening.

The horizontal size of hold fast is kept about 20 cm, section 30 mm x 6 mm and it is embedded in masonry.

Post or Door Jamb:

Vertical member of frame one on each side is called post or jamb.

Fixtures and Fastenings for parts of a doors:


Various types of hinge as follows:

Back flap hinge:

These hinges are used where the shutters are thin.

They are fixed on the back side of the shutter and frame.

Butt hinge:

Those hinges are commonly used for doors and windows.

They are screwed to the edges of doors or windows to the relaxation of the frame.

The hinge edge is made of cast iron, malleable iron or steel.

Garnet hinge:

It is a wrought strap that is fastened to a metal piece plate also known as a shutter because it has a long arm, which is screwed on the shutter and a small plate is mounted on the frame.

These hinges are used on plank shutter doors and closed doors, locked and locked doors etc.

Parliamentary hinge:

This is a special type of hinge used to hang doors.

These hinges are used when the opening is narrow and essential to maintain the opening free from obstruction because of the door being closed.

Strap hinge:

This type of hinge is sometimes used instead of a T-hinge used for ledged and braced doors for heavy use such as garages, gates, etc.

Nar-Madi hinge:

It is used for heavy doors, pins mounted on frames or walls.

The strap on which the shutter of the door or window is fixed is round with a pin.

Rising butt binge:

These hinges are provided with helical nickel joints, due to which the shutter is extended 10 mm on opening.

Pin hinge:

It is usually used to close heavy doorways.

The middle pin of the hinge can be eliminated and the two leaves of the hinge might be fastened separately to the frame and shutter.


Various types of bolt as follows:

Aldrop bolt:

This is fixed on the external door where a padlock is used.

Barrel bolt:

It is used to fix the back face of the outer door.

The socket is fixed to the door frame, while the plate is screwed to the inside of the shutter.

Flush bolt:

This type of bolt is used where the projecting tower bolt will be objectionable and when it is dashed to keep the bolt flush with the face of the door.

Hasp and staple bolt:

This type of bolt is used for exterior doors, where the padlock is to be used, the staples are fixed to the door frame, while the shutter is fixed.


It is used to secure the door, it is usually made of malleable iron or bronze.

It consists of a lever mounted at one end, which can be controlled by a trigger passing the shutter; the lever is secured in hasp and staple.

Hook and eye:

This is used for keeping window shutter in position when window is open.


Handles are used to pull and push the doors and windows.

Pad lock:

When hash and staple bolts are used to secure the door in temporary and common tasks.

Door or window Sill:

A horizontal member of brick, stone, concrete or wood is provided to offer support for the vertical members of the window.

For proper functioning of the window sills:

  • Proper and appropriate finish should be given to the top surface of the window sill.
  • To avoid the ingress of moisture inside the structure, a damp proof course should be given under the windows.
  • The projection of window sills on the external wall should not be less than 50 mm and it should be suitably throated to throw off the water outside.




The doors should be located in front walls to ensure good ventilation and free air circulation in the room.

In concern of the utility and privacy of the room, the door should be located close to the corner of the room about 20 cm from the corner.

The location and size of the door should meet the functional requirements of the room.

To achieve optimal use of the room, the number of doors in a room should be kept to a minimum, as a greater number of doors cause obstruction and decrease area in circulation.

Now I’d like to hear from you, which section was new to you or maybe I missed something. Either way, let me know by leaving a comment below.

Hello, I'm Rahul Patil founder of, I had studied B.E. Civil. This blog provides authentic information regarding civil structures, equipment, materials, tests & much more.

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