Rockwool Unfaced CurtainRock 40 - All Sizes Thickness:4 in Outstanding puncture resistance

Outstanding puncture resistance

For roof/ceiling and interior/exterior wall applications installed in wood or metal framing cavities or between furring channels

Rockwool Comfortbatt R23 insulation is suitable for use in exterior walls

The side rails are integrated into the bottom sash and extend during its opening

It has built-in flashing

Rockwool Unfaced CurtainRock 40 - All Sizes Thickness:4 in Outstanding puncture resistanceRockwool CurtainRock is a lightweight, semi rigid stone wool insulation board designed to meet a variety of curtain wall specifications. Rockwool Safe is UL and Intertie approved as a forming material for numerous fire stop systems. Rockwool Safe together with CurtainRock 80 provides a comprehensive critical line of defense in fire protection that has been UL ULC tested and approved for perimeter fire containment. Thickness Sq Ft Pack 3" 40 4" 40 5"