3M Fire Barrier Self Locking Pillows

A Self-Contained, Highly Intumescent Firestop Product For Use in Through Penetration Firestops. Simple to Use, Interlocking Strips Lock Pillows Together. Pillows Achieve Up to 3-Hour Fire Ratings When Tested By UL Inc. in Accordance With Asme 814 (Ul1479) 2″ x 6″ x 9″
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