The FlameSafe Intumescent Sleeve is made of 28-gauge galvanized steel and is lined with FlameSafe FSP1100 intumescent firestop putty. The sleeve will firestop both sides of a wall or floor in one application and has been tested at Underwriters Laboratories Inc. for up to three hours. It is approved for use with rigid, nonmetallic conduit installations.
International Protective Coatings Corp.
Oakhurst, NJ
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