Proset systems firestopping penetration
Through Penetration Firestop and Fire Resistive Joint Systems
Technical Library Firestop Search - Hilti USA
Manufacturers of Firestopping
Description: HW-D More information. AirSeal Insulation Systems. This is an important joint because the wall system requires a wider space than other wall systems and there could be significant movement in the joint, which could allow fire and smoke to pass through easily. If a tested system does not exist, an engineering judgment can be obtained.