- Features
 
- 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
 - Recommended Applications: Fire resistive enclosure for commercial kitchen grease ducts,Stair pressurization ducts, Life safety air and ventilation ducts
 



