### 1. What Does "EW 120" Mean?The classification comes from the European standard **EN 13501-2**, which defines the fire performance of construction products and building elements.* **E (Integrity):** This is the ability of the curtain to prevent the passage of flames and hot gases. An "E" classi

Here is a comprehensive breakdown of the UL certificate requirements for fire curtains.### First, the Key Standard: UL 10DThe primary Underwriters Laboratories (UL) standard for fire curtains is **UL 10D: Standard for Fire Protective Curtains**. This standard specifically addresses vertically descen

First, it's crucial to understand a core concept: the "fabric" of a fire curtain is **not a traditional textile** like cloth. Instead, it is a **flexible barrier made from composite, inorganic materials** designed to withstand high temperatures. These curtains are stored hidden in the ceiling and de