Fire prevention: door opened or door closed?

Have you ever wondered how a door can affect the spread of a fire?

“A closed door can provide an effective barrier against carbon monoxide, smoke and flames,” summarizes the UL (Underwriters Laboratories). According to the Fire Safety Research Institute, FSRI, closing doors before going to sleep is 𝐦𝐨𝐫𝐞 𝐢𝐦𝐩𝐨𝐫𝐭𝐚𝐧𝐭 𝐭𝐡𝐚𝐧 𝐞𝐯𝐞𝐫”.

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See the videos for yourself – the results are breathtaking!

Short version (FR) : https://youtu.be/mHiS-N7nBbo
Complete version (EN/FR) : https://youtu.be/VzzRolk452k