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2. Fire door - Wikipedia

   en.wikipedia.org/wiki/Fire_door

   The intumescent and smoke-seal bounding of fire doors should be routinely checked, as should the action of the door closer and latch. Some fire doors are held open by an electromagnet, which is typically wired to a fire alarm system. If the power fails or the fire alarm is activated, the coil is de-energized, and the door closes.

3. Intumescent - Wikipedia

   en.wikipedia.org/wiki/Intumescent

   These intumescent materials produce a light char which is a poor conductor of heat, thus retarding heat transfer.Typically the light char consists of microporous carbonaceous foam formed by a chemical reaction of three main components: ammonium polyphosphate, pentaerythritol, and melamine. [2]

4. Fire damper - Wikipedia

   en.wikipedia.org/wiki/Fire_damper

   Also, intumescent fire dampers can be qualified to ASTM E2912. [2] or ISO 10294-5:2005 Fire dampers for air distribution systems—Part 5: Intumescent fire dampers. The purpose of some intumescent fire dampers is to prevent entry of airborne burning embers into buildings as a result of Wildlife Urban Interface Fires (WUI). [3]

5. Passive fire protection - Wikipedia

   en.wikipedia.org/wiki/Passive_fire_protection

   Fire-resistance rated wall assembly with fire door, cable tray penetration and intumescent cable coating. Passive fire protection (PFP) is components or systems of a building or structure that slows or impedes the spread of the effects of fire or smoke without system activation, and usually without movement. [1]

6. U.S. October budget deficit jumps to $257 billion, handing ...

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   WASHINGTON (Reuters) -The U.S. budget deficit jumped nearly four-fold to $257 billion in October, a figure inflated by one-off factors, the Treasury Department said on Wednesday in a report that ...

7. 'Unbelievable support': Lara Trump removes name to replace ...

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   Lara Trump, President-elect Donald Trump's daughter-in-law who served as co-chair of the Republican National Convention during the 2024 election, said Saturday she is removing her name from ...

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   It's still 50% off during Nordstrom's extender Cyber Sale. You can get it in a range of colors, including black, navy, sage green and gray. "The fit on this coat is absolutely perfect.

9. Firestop - Wikipedia

   en.wikipedia.org/wiki/Firestop

   A firestop or fire-stopping is a form of passive fire protection that is used to seal around openings and between joints in a fire-resistance-rated wall or floor assembly. Firestops are designed to maintain the fire-resistance rating of a wall or floor assembly intended to impede the spread of fire and smoke. [1]