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When standing outside, a left-handed door opens from left to right (when closed, the handle is on the far left), and a right-handed door opens from right to left (when closed, the handle is on the far right). These relationships are sometimes described with the letters O and X, where O is the fixed panel and X is the sliding panel.
Right hand hinge (RHH): Standing outside (or on the less secure side), the hinges are on the right and the door opens in (away from you). Left hand reverse (LHR): Standing outside the house (or on the less secure side), the hinges are on the left, knob on right, on opening the door it swings toward you (i.e. the door swings open toward the ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 7 March 2025. Directionality of traffic flow by jurisdiction Countries by direction of road traffic, c. 2020 Left-hand traffic Right-hand traffic No data Left-hand traffic (LHT) and right-hand traffic (RHT) are the practices, in bidirectional traffic, of keeping to the left side or to the right side of ...
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Numerous devices exist to serve specific purposes related to how a door should (or should not) be used. See: Door chain - A device to secure door opening; Door closer – Mechanical or electromagnetic device to close an open door (in the event of a fire) [3] Door opener - Automatic door opening device activated by motion sensors or pressure pads
This is an accepted version of this page This is the latest accepted revision, reviewed on 6 March 2025. Device to open or close door Various examples of door handles throughout history A door handle or doorknob is a handle used to open or close a door. Door handles can be found on all types of doors including: exterior doors of residential and commercial buildings, internal doors, cupboard ...