คุณลักษณะ 

Self-contained , highly - intumescent pillows designed to firestop a wide

variety of through penetrations in cluding cable trays, conduit and blank

opening.Interlocking strips hold pillows securely together yet release

easily for retrofit or reuse - just remove and reinstall pillows as needed.

• Up to 3-hour fire rating per ASTM E 814 (UL 1479)
• UL listed systems with openings up to 1,080 sq. in.
• No wire mesh reduces safety issues  
• Easy to install, easy to remove and reuse
• Lock pillows together , compress and place (use 3M Fire Barrier Moldable Putty +in voids to ensure proper seal) 
• No graphite 
• Excellent aging properties 
• Pillows can be field - cut when needed
• Available size:2"x 4" x 9" (small),2"x 6" x 9" (medium) and 3" x 6" x 9" (large)