Ultraline™ 4600 HRCmax Heavy-Duty 9/16" Bolt-Slot seismic ceiling suspension is made with the industries highest high standard recycled material content (65%) to help you maximize your LEED results. The same trusted design as standard 4500 Ultraline ceiling grid, 4600 HRCmax™ is compatible with industry standard acoustical ceiling panels, lighting and air diffusers. Ceiling suspension is heavy duty and has Class A flame spread. All CMC stab cross tees include Quick-Click™ integral clips for fast and sturdy installation. The ceiling grid is suitable for general areas and as part of the 4600 family of suspension systems is ICC-ES listed for seismic ceiling suspension applications. Wall angle with 9/16" wide face is available in standard and shadow wall molding styles.