Fire Protection · E-FRJZ5

L Rating At Ambient - Less Than 1 Cfm/Sq Ft

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System No. W-L-1054 provides a firestop penetration assembly with F ratings of one and two hours, a T rating of zero hours, an L rating at ambient of less than one CFM per square foot, and an L rating at 400 degrees Fahrenheit of four CFM per square foot. The assembly accommodates a penetrating item within a wall construction identified by items 1A and 1B, with sealant or packing material designated as item 3 around the penetrant item 2.

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