Steel ceiling suspension system 650/670

650 (Hook) and 670 (stab) Fire Rated ceiling suspension for drywall ceilings. Heavy-Duty 1-3/8" wide knurled faced furring runners made from galvanized steel are factory punched for accurate cross member spacing. Choose from cross furring channels or 1-3/8" Hook or Stab cross tee furring. Heavy-Duty 1-3/8" wide faced furring runners are factory punched for accurate cross member spacing. Choose from cross furring channels or 1-3/8" Hook or Stab based furring cross tees. All system options provide faster and more accurate alignment with drywall edges compared to traditional black iron and hat channel construction. Optional 15/16" cross tees provide accurate module sizes for Nema Type G light fixtures. 650 and 670 systems are fire rated with multiple Underwriters Laboratories Inc. (ULI) listings and suitable for seismic applications.