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Ul detail penetrate 2 hour wall detail

Find what you are looking for faster with the new Firestop Selector. Find the exact system faster with Direct Search e. Please note, the order volume has been updated. This is due to package and minimum order quantities.
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UL Systems

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Penetrations | UpCodes

July 30, by. There are two types of penetrations to be considered. A through penetration has an opening that passes entirely through a fire-resistance rated assembly, while a membrane penetration has an opening that only passes through one side of the assembly. For example, a recessed electrical box mounted in a gypsum board wall surface of a fire-resistance rated wall, with conductors in the wall cavity is a membrane penetration. This article focuses on products UL certifies for protecting membrane penetrations in these walls.
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Section 714 Penetrations

Click on any link below to view the UL ratings. All have been tested to UL standards. Some of our systems also have T and L Ratings.
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Through penetrations of fire-resistance -rated walls shall comply with Section Exception: Where the penetrating items are steel, ferrous or copper pipes, tubes or conduits, the annular space between the penetrating item and the fire-resistance -rated wall is permitted to be protected by either of the following measures:. Through penetrations of horizontal assemblies shall comply with Section Through penetrations shall be protected by an approved through-penetration firestop system installed and tested in accordance with ASTM E or UL , with a minimum positive pressure differential of 0.
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