ISOVER features options with ULTIMATE mineral wool that offer fire resistance to metal ductwork though offering thermal and acoustic Added benefits. The basement extract ductwork technique (proven in brown) has to be suitable for clearing fumes and smoke within the basement level. The program need to Commonly be rated for https://andreshyncp.blogchaat.com/37148911/the-single-best-strategy-to-use-for-fire-resisting-ductwork-insulation