Structural Members for use in Fire Rated floor/ceiling assemblies;
Series Depths (inches)
NI-20 9-1/4, 9-1/2, 11-1/4, 11-7/8
NI-40 9-1/2, 11-7/8, 14, 16
NI-40x 9-1/4, 9-1/2, 11-1/4, 11-7/8, 14, 16
NI-60 9-1/2, 11-7/8, 14, 16, 18
NI-70 9-1/2, 11-7/8, 14, 16
NI-80 9-1/4, 9-1/2, 11-1/4, 11-7/8, 14, 16
NI-80x 18, 20, 22, 24
NI-90x 11-7/8, 14, 16
See Enclosed Listing Designs