A closed door is one of the best pieces of firefighting and lifesaving equipment. Why? Because a closed door can hinder flames and smoke from spreading to other rooms and can help deprive a fire of the oxygen it needs to grow, limiting the structural damage a fire can cause and, most importantly, saving lives. In fact, closing doors to quarantine a fire is an age-old technique used by firefighters that homeowners should always keep in mind.
Remember:
-Close doors behind you when escaping a room or building that's on fire.
-Keep fire doors closed. Never wedge, disable or prop open fire doors in any building.
