Safe 'n' Sound 3 in. x 15-1/4 in. x 47 in. Soundproofing and Fire Resistant Stone Wool Insulation Batt (59.7 sq. ft.)
https://www.probuilderswarehouse.com/shop/982937-0-safe-n-sound-3-in-x-15-1-4-in-x-47-in-soundproofing-and-fire-resistant-stone-wool-insulation-batt-59-7-sq-ft-1083674
https://www.probuilderswarehouse.com/web/image/product.template/1083674/image_1920?unique=b31ad15
Brand: ROCKWOOL
Model: RXSS31525
SKU#: 982937.0
Barcode: 202531875
