PART # WIDTH SLOPE RISER/NOSING NOMINAL LENGTH SS-276 4-9/16" 5 HARDWOOD or SYNTHETIC 12" 14" 16" 36" PART # WIDTH SLOPE RISER/NOSING NOMINAL LENGTH SS-276 5-5/8" 6/7 HARDWOOD or SYNTHETIC 12" 14" 16" 36" SS-280 SS-2000 5