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A trapdoor or hatch is a sliding or hinged door that is flush with the surface of a floor, ceiling, or roof. [1] It is traditionally small in size. [ 2 ] It was invented to facilitate the hoisting of grain up through mills, however, its list of uses has grown over time. [ 3 ]
A passthrough in a kitchen A small passthrough. A passthrough (or serving hatch [1]) is a window-like opening between the kitchen and the dining or family room. [2] Considered to be a conservative approach to the open plan, [3] in a modern family home a passthrough is typically built when a larger opening is either precluded by the locations of structural columns or is impractical due to the ...
The hinge of the operating door is next to the adjacent fixed door and the latch is located at the wall opening jamb rather than between the two doors or with the use of an espagnolette bolt. A Lev door or convection door is an internal floor-to-ceiling (full height) door, consisting of a standard door leaf and an upper leaf in place of the ...
Hatch, a sealed or secure door of a ship, submarine, aircraft, spacecraft, or automobile Hatch, a sluice gate Hatch, a trapdoor , a door on a floor or ceiling
It is also often used as a division between double doors. When dividing adjacent window units its primary purpose is a rigid support to the glazing of the window. Its secondary purpose is to provide structural support to an arch or lintel above the window opening. Horizontal elements separating the head of a door from a window above are called ...
A revolving door typically consists of three or four doors that hang on a central shaft and rotate around a vertical axis within a cylindrical enclosure. To use a revolving door, a person enters the enclosure between two of the doors and then moves continuously to the desired exit while keeping pace with the doors.
A watertight hatch with the door dogs clearly visible Three types of doors are commonly used between compartments. A closed watertight door is structurally capable of withstanding the same pressures as the watertight bulkheads they penetrate, although such doors require frequent maintenance to maintain effective seals, and must, of course, be ...
AMC Pacer – Aircraft-style doors improve sealing and reduce wind noise, top of door wraps into the roof, hinges provide an outward arc for the top of the door for easier egress when open, rain gutters are hidden in the roof cut outs, the passenger door is four-inches (101 mm) longer than the driver's and the difference disguised by the broad ...