Standard BL Chicago Approved All LED Exit Stair Sign And Emergency Steel Combination Single Face Red Letters White Housing No Remote Capacity Stair No Arrow (CALEDCXTEU1RW SW NA) Tier6 while the PVC over nylon jacket rated Tier7 while the PVC over nylon jacket rated to 105°C stands up to abrasion and heat around lamp sockets and ballast compartments Standard BL Wet Location LED Combination Single Face Green Letters Gray Housing With White Faceplate (CWLEZXTEU1GG CW SDT TP) Standard BL Chicago Approved All LED Exit Stair Sign And Emergency Steel Combination Single Face Red Letters White Housing No Remote Capacity Stair No Arrow (CALEDCXTEU1RW SW NA)