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  2. Fire door - Wikipedia

    en.wikipedia.org/wiki/Fire_door

    If the power fails or the fire alarm is activated, the coil is de-energized, and the door closes. Wireless, battery-operated, fire door retainers can also be used to safely and legally hold fire doors open. Rated fire doors are tested to withstand an ASTM E119 standard time-temperature curve for a specified period. [8]

  3. Electromagnetic door holder - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_door_holder

    An electromagnetic door holder (electromagnetic door holder and release or hold-open device, sometimes informally called a mag hold open or electric doorstop) is a simple electromechanical mechanism which can be used to hold a fire door or security door open until given a signal to release.

  4. Fire alarm system - Wikipedia

    en.wikipedia.org/wiki/Fire_alarm_system

    Remote annunciator: a device that connects directly to the panel; the annunciator's main purpose is to allow emergency personnel to view the system status and take command from outside the electrical room the panel is located in. Usually, annunciators are installed by the front door, the door the fire department responds by, or in a fire ...

  5. Door closer - Wikipedia

    en.wikipedia.org/wiki/Door_closer

    During a fire, any door that penetrates a firewall must be fire-rated. Fire doors need to be closed in case of fire to help prevent the spread of fire and smoke. Any fire doors which are normally held open must automatically close and lock when a fire is present in the building. The function of an emergency exit rim device (crash bar or panic ...

  6. Crash bar - Wikipedia

    en.wikipedia.org/wiki/Crash_bar

    Crash bar doors in a school, with upper vertical rod latches. A crash bar (also known as a panic exit device, panic bar, or bump bar) [1] [2] is a type of door opening mechanism which allows users to open a door by pushing a bar.

  7. Screwfix - Wikipedia

    en.wikipedia.org/wiki/Screwfix

    Screwfix Direct Limited, trading as Screwfix, is a retailer of trade tools, accessories and hardware products based in the United Kingdom. [6] Founded in 1979 as the Woodscrew Supply Company, the company was acquired in July 1999 by Kingfisher plc , which also owns B&Q , and is listed on the London Stock Exchange .

  8. The cozy slippers that are 'just like UGGs but at a great ...

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    What reviewers say 馃挰. More than 20,000 Amazon shoppers have given these slippers a comfortable five-star rating.. Pros 馃憤 “Best slippers of my life!” said a satisfied customer. “They ...

  9. Fusible link - Wikipedia

    en.wikipedia.org/wiki/Fusible_link

    Mechanical fusible links are utilized as the triggering device in fire sprinkler systems and mechanical automatic door release mechanisms that close fire doors in warehouses, etc. Fire dampers in ventilation systems have fusible links so that the dampers close automatically in case of fire, limiting the spread of flame or hot gases through a ...

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