Utilize to uncoated stonewool boards Our alternatives are created for rapidly application in tight fitting spaces, and offer versatile installation for use with different correcting possibilities, which include: ROCKWOOL Curtainrock® is actually a stone wool insulation board made for use in ASTM E2307 tested and authorised perimeter fire containment devices https://fireratedinsulationforduc45567.idblogmaker.com/35868349/the-basic-principles-of-fire-rated-insulation-for-ductworth