R-4.1 Rockboard-40® Fire-Resistant Mineral Wool Insulation Panel 1 in. x 24 in. x 48 in. (26 sq. ft.) | SAFB1.0-RB40-24-RW

Roxul's Rockboard 40 Panels are a 4 lb. board that provides R4.1/in thermal resistance and increased acoustic performance for interior wall applications. It can be faced with multiple facers for aesthetic reasons.

• Common applications: Mechanical/Utility rooms
• Semi-rigid mineral wool insulation board
• Non-combustible, water repellent, fire resistant and sound absorbent
• Weight: 4 lb.