Penetration Fire Tests
To maintain the integrity of the shaft wall, most services that interrupt the wall must have additional protection against fire. Call-button and floor-indicator penetrations occur in every elevator shaft wall. Boxes for these services usually penetrate the wall and invalidate the fire rating unless supplementary fire protection is added. Details included here successfully achieved a 2-hour fire endurance when tested according to ASTM E119 fire exposure.

Electrical Box: Box size should be compatible with C-H stud size selected (4" studs typically required) per Test CEG 6-15-79.
Fire Damper: 1-1/2 hour per Test UL R13479.