Fire Protection · F-T6F44

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

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System No. W-L-1054 provides a firestop assembly for penetrations through one or two-hour rated walls. The configuration achieves F ratings of one and two hours, a T rating of zero hours, an ambient L rating of less than one CFM per square foot, and an L rating at 400 degrees Fahrenheit of four CFM per square foot. Callouts reference items 1A, 1B, 2, and 3 for the penetrant and surrounding wall construction.

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