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Storm door, Japan. A storm door is a type of door that is installed in front of an exterior access door to protect it from bad weather and allow ventilation.Storm doors generally have interchangeable glass panels and window screen panels to provide visibility and prevent flying insects from entering the home.
A metal doorframe with a strike plate built in: in other doors this would be a metal strikeplate in a wooden doorframe. The term door security or door security gate may refer to any of a range of measures used to strengthen doors against door breaching, ram-raiding and lock picking, and prevent crimes such as burglary and home invasions.
Steel doors are another major type of residential front doors; most of them come with a polyurethane or other type of foam insulation core – a critical factor in a building's overall comfort and efficiency. Steel doors mostly in default comes along with frame and lock system, which is a high cost efficiency factor compared to wooden doors.
Swinging glass doors are a better choice than the typical sliding glass doors, since they offer a much tighter seal, [7] but glass – even the best type of glass, chosen according to the climate zone – is always a poor insulator, making doors based on them a poor choice from a thermal comfort perspective.
A groove is cut into the bottom of the door which runs over this guide, preventing lateral movement of the door. With a glass door, the panel runs through the guide as illustrated. Because the door is always engaged in the guide, when the door is open, the floor is clear; hence 'clear threshold'. The bottom of the doors are held in place on tracks.
Another device for smaller domestic doors used a loop of rope or skein fixed to the door frame, that was twisted, with a piece of wood placed in between the twists to push the door. The opening of the door twists the skein further, when the door is released the rope's torsional force pushes the arm back against the door, thereby closing it.