SpecSeal® Composite Sheet is the ideal solution for large openings where a permanent seal is required. Composite sheet consists of a thin sheet steel with intumescent embedded onto a single side. Composite sheet partners with other SpecSeal® firestop products such as Firestop Collars and EZ-Path® Devices to size down oversized openings.
Profession Fit and Finish
Partners with other SpecSeal® Firestop Products
Easily cut with hand sheers
Tested for up to 4 Hours of fire resistance when tested to ASTM E814/UL1479