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  2. Garage door - Wikipedia

    en.wikipedia.org/wiki/Garage_door

    Using track hardware, a car can be parked much closer to the door, as the door is positioned entirely inside the garage door header when in the open position. Track-type hardware has less arc when raising and lowering the garage door than jamb-type hardware. [citation needed] Sectional garage doors. Sectional doors usually have three to eight ...

  3. Garage door opener - Wikipedia

    en.wikipedia.org/wiki/Garage_door_opener

    The electric overhead garage door opener was invented by C.G. Johnson in 1926 in Hartford City, Indiana. [1] Electric Garage Door openers did not become popular until Era Meter Company of Chicago offered one after World War II where the overhead garage door could be opened via a key pad located on a post at the end of the driveway or a switch inside the garage.

  4. Roller shutter - Wikipedia

    en.wikipedia.org/wiki/Roller_shutter

    A roller shutter, security shutter, coiling door, roller door or sectional overhead door is a specialized type of door or window shutter consisting of multiple horizontal slats, bars, or web systems interconnected through hinges. The mechanism involves lifting the door to open it and lowering it to close.

  5. Swing-door operator - Wikipedia

    en.wikipedia.org/wiki/Swing-door_operator

    Swing side, door mounted sensor—mounted on the swing side of the door itself, used as the door is opening to detect a user in the way of the opening door. In that case, the operator stops the door. The sensitivity of infrared sensors must be reduced at the end of the opening angle, if it starts seeing a wall next to the door, so it may not ...

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  7. Garage (residential) - Wikipedia

    en.wikipedia.org/wiki/Garage_(residential)

    The most common doors on these garages were either two wooden barn style doors with a standard sized access door on the side of the garage or the B&D Rolla Door, which is described below. The most common garage door to date in Australia is the B&D Rolla Door, having been around since 1956 and still in heavy use today.

  8. List of tram systems by gauge and electrification - Wikipedia

    en.wikipedia.org/wiki/List_of_tram_systems_by...

    The following is a list of tram/streetcar (including heritage trams/heritage streetcars), or light rail systems with their track length, track gauge, electrification system. The vast majority of tram systems use 1,435 mm ( 4 ft 8 + 1 ⁄ 2 in ) standard gauge .

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