| 摘要 |
A fireproof louver panel includes a panel frame and a plurality of longitudinally extending slats attached to the panel frame. One or more of the slats has a shell and an intumescent layer that expands under heat to form an airtight seal. A fireproof door or window may include an external frame, an internal core of a fireproof material (among other materials), and one or more such fireproof louver panels. A method of fireproofing an opening includes affixing a movable fireproof closure in the opening, and placement intumescent layers on the closure and on louvers disposed therein so that the opening is sealed when the first intumescent layer and the second intumescent layer are both subjected to heat.
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