Firestopping in Nearly Any Size and ShapeFor larger openings and penetrations where putties and strips alone aren't enough, our 3M™ Fire Barrier Composite Sheet CS-195+ is a one-part firestop system that installers can cut and form to exact sizes - no mixing or damming required. These sheets are easily installed using common tools and fasteners. Ideal for firestopping penetrations such as cable trays and conduit, the sheets feature intumescent material bonded to 28-gauge galvanized steel, reinforced on its facing side with hexagonal wire mesh and covered in aluminum foil. This combination of organic/inorganic materials makes these composite sheets a reliable firestop in tested and listed systems, new and retrofit. These materials also make an excellent thermal conductor, helping to dispel built-up radiant heat to preserve process and control equipment and help minimize cable derating concerns.Recommended ApplicationsSeal penetrations through fire-rated walls and floorsFirestop penetrations including cable trays, cable, piping and large blanksMultiple component installations where heat build-up and derating are concernsShield conduit, HVAC ductwork, panels, valves and vital heat-sensitive process equipmentFire-resistive and smoke seal for any shape opening in concrete block or slabsProtect cable drop-outs, junction boxes and cabinetsIntermittent firestop in horizontal and vertical cable tray runsIn conjunction with 3M™ Fire Barrier Sealant or Moldable Putty MP+Fully Tested and Approved3M™ Fire Barrier Composite Sheet CS-195+ is firestop tested up to 4 hours in accordance with ASTM E 814 (UL 1479).The Science of Better Fire Protection from 3MSince 1925 when one of our lab assistants invented masking tape, 3M has been applying science to life -developing adhesive products and technologies that help entire industries and individual businesses worldwide. The work that began with a single 3M engineer now spans decades and generations. And all of it goes into each of our adhesives, sealants, protective coatings, devices and firestop products including 3M™ Fire Barrier Composite Sheet CS-195+ to improve performance, and to help businesses like yours operate faster, better and more efficiently.