This is a photo of Volume 2.รก Volume 2
includes hourly ratings for JOINT
SYSTEMS, THROUGH-PENETRATION FIRESTOP
SYSTEMS, ELECTRICAL CURCUIT PROTECTIVE SYSTEMS and DUCT ASSEMBLIES.
Volume 3 includes hourly ratings for DAMPERS,
FIRE DOORS, GLAZING MATERIALS
and RELATED EQUIPTMENT
Volume
3
Volume
2