3M™ Fire Barrier Duct Wrap Collar 615+, 1.5 in x 6 in x 25 ft, 4/case

• Lightweight (6 lbs per cu ft) and thin (1.5" - in accordance with the tolerances in ASTM C 892) for easier application
• 2-hour fire protection
• Third-party certified to ASTM E 2336 (grease duct test standard) and ISO 6944 (air duct test standard)
• Tested and listed with UL and Intertek, meets IBC, IMC, UMC, NFPA and other key life safety codes
• Listed by California State Fire Marshal (Listing No. 2440-0941:5555)
• Supports maximum temperatures of up to 2192°F (1200°C)
• Apply in 2 layers for grease ducts
• Apply in 1 layer for air ducts

Thin, lightweight and flexible, 3M™ Fire Barrier Duct Wrap 615+ provides excellent insulating capabilities and offers a space-saving alternative to traditional bulky fire protection methods obtained through a gypsum wall shaft or enclosure. This wrap is commonly used in commercial kitchen grease ducts, as well as ventilation ducts.