• Intumescent pillows are designed to expand and lock together for tight seal against flame, smoke and toxic gasses
• Easy to install, remove and reconfigure to help save time and labor
• Interlocking strips let installers quickly lock pillows together by hand for fast, accurate firestops
• Available in multiple sizes and can be cut in the field for precise fill and compression
• No wire mesh or additional support required
• Firestop tested for up to 3 hours in accordance with ASTM E 814 (UL 1479) and CAN/ULC-S115