3M Fire Barrier Duct Wrap 615+, 24 in x 25 ft, 1 roll/case
- Proven alternative to 1- and 2-hour fire resistant rated shaft enclosures for grease ducts.
- Lightweight and thin, for ease of installation and space saving, while allowing custom installation applications with multiple layers where needed.
- Butted inner layer in 2-layer grease duct applications.
- Zero clearance to combustible throughout the entire enclosure system.
- Listed by California State Fire Marshal (Listing No. 2440-0941:5555).