Emergency exit upgrades change rusted footsteps and stringers with new steel to historical dimensions
https://www.scribd.com/document/1038241182/Chimney-Crown-to-Shroud-Personalized-Metal-Security-for-Stonework-Long-Life-133789
Fire escape upgrades replace rusted treads and stringers with new steel to historical dimensions, including non-slip surface areas that continue to be aesthetically discreet.