Steel ceiling suspension system 660

660 Wide-Face 1-3/8" Heavy-Duty ceiling suspension offers bolder expression of the ceiling grid modules, especially at high elevations. 660 suspension is made from hot-dip galvanized steel with aluminum cap for added corrosion resistance in interior environments. Ceiling suspension is compatible with industry standard acoustical panels, lighting and air diffusers that are designed for 1-3/8" exposed ceiling grid. The 660 ceiling suspension is flame spread Class A and ICC-ES listed for seismic applications. All CMC stab cross tees include Quick-Click™ integral clips for fast and sturdy installation.