Knauf Insulation R 8.7 Acoustical Unfaced Insulation Board 2" x 24" x 48" 6 Pack Drift 25 in x 15 in Item Weight:.625 25 in x 15 in x 48 in batts provide a total of 100 square feet of coverage noise reduction Recommended Subfloors Concrete or wood Manufacturer Better Life Technology Manufacturer Part Number GF55RB8624MB Prop 65 Warning This product can expose you to Antimony Oxide (Antimony trioxide) 7 Facing Unfaced Material Fiberglass with ECOSE Technology binder Board Dimensions 2 in x 24 in x 48 in Pack Quantity 6 boards Primary Use Acoustical panels and interior product applications Certifications UL Validated Formaldehyde Free A: It is unfaced