UL 793-2003 标准详情
- 标准号:UL 793-2003
- 中文标题:排烟和加热用自动开关屋顶通风孔
- 英文标题:(Automatically operated roof vents for smoke and heat)
- 标准类别:美国保险商实验室标准UL
- 发布日期:2003-06
1 SCOPE1.1 THESE REQUIREMENTS COVER AUTOMATICALLY OPERATED ROOF VENTS FOR SMOKE AND HEAT THAT FALL INTO TWO GENERAL CATEGORIES: MECHANICALLY-OPENED AND GRAVITY-OPENED. MECHANICALLY-OPENED VENTS CONSIST PRIMARILY OF A BODY FRAME, ONE OR MORE DAMPER CO
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