Simpson CBH2.37X5.5B KT Concealed Glulam Beam Hanger 2 3 8 in x 5 1 2 in 3 Ga Steel w SDS Screws Titen HD Mechanically Galvanized Reduced operator fatigue on long Reduced operator fatigue on long drilling runs the proprietary flute geometry optimizes impact energy transfer and actively reduces vibration Gray 01 color matched for composite decking the screw head blends with gray toned composite boards so fasteners recede visually into the deck surface rather than standing out beam length tolerance on each end accommodates minor dimensional variation in glulam beams Dual fire ratings support a wider range of assembly requirements achieving both 1 hr and 2 hr ratings per ASTM E119 means a single connector model covers multiple project specifications without substitutions or engineering workarounds