STI Pillows, Sheets
STI SpecSeal® Firestop Pillow
Able to expand in all directions when exposed to extreme heat, these easy to use intumescent pillows block the spread of smoke and flame through wall penetrations and construction gaps.
STI Firestop SpecSeal® Composite Sheets
Specifically created to firestop large and medium-sized openings, this intumescent composite sheet is easy to cut with sheet metal cutting tools, and provides 2 hours of fire protection.
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