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ROCKWOOL AFB is a semi-rigid stone wool insulation board sold in 24 by 48 inch panels from 1 to 6 inches thick. It is non-combustible, with a flame spread index of 0 and a smoke developed index of 0, and it adds sound control with an STC of 43 and an OITC of 28. That combination suits interior partitions, ceilings, and equipment rooms where fire and noise both matter. Against glass fiber batts it holds its shape, resists moisture and mold, and cuts noise better, but it is denser, heavier, and harder to cut, and it costs more than plain batts.
In stock
Lowest price we've seen: $1,401.03 on Nov 14 at Insulation4US. Tracked across 1 store since Nov 14.
It is non-combustible and has a Flame Spread Index of 0 and a Smoke Developed Index of 0.
It has an STC rating of 43 and an OITC rating of 28 for sound control. Its USDA biobased content is 25%.
