3M Fire Barrier Composite Sheet CS-195+ 16 in x 28 in

3M™ Fire Barrier Composite Sheet CS-195+ (16 in x 28 in) is a high-performance, intumescent firestop solution engineered to seal blank openings, oversized penetrations, cable trays, conduit bundles, and HVAC ductwork in fire-rated walls and floors. Designed for tough commercial, industrial, and multi-service environments, this composite sheet delivers up to 4 hours of fire protection when installed according to UL-tested systems.

Constructed as a thin, flexible, lightweight laminated sheet, the CS-195+ expands under heat to form a hard, protective char that tightly seals penetrations—blocking flame spread, smoke, and toxic gases from moving between rated areas. Its thermal conductivity also helps dissipate heat, preventing dangerous temperature buildup within the assembly.

Perfect for new construction or retrofit work, 3M’s composite sheet is UL classified, IBC compliant, and completely re-enterable, making it ideal for high-traffic mechanical rooms, telecom rooms, electrical hubs, and anywhere future access may be required. Installers appreciate how easy it is to cut, shape, and fasten using common trade tools—simply measure, trim, fit, and secure with self-tapping screws or anchor bolts.

Key Features

• Up to 4-hour fire protection (ASTM E814 / UL 1479 tested)
  

• Intumescent technology expands under heat to form a solid, protective char
  

• Thermally conductive layer reduces unwanted heat buildup
  

• Non-flame supporting, UL classified, and code compliant
  

• Re-enterable—modify or add cables without replacing the entire firestop
  

• Easy installation using standard tools
  

• Cut and form to any shape, ideal for complex or irregular penetrations
  

• Suitable for large openings, cable trays, HVAC ducts, conduit bundles, and more
  

Whether you’re managing fire protection for a data center, telecom room, mechanical distribution area, or industrial facility, 3M™ Fire Barrier Composite Sheet CS-195+ provides a reliable, durable, and flexible firestop solution that keeps your building safe and code-compliant.