stairway railing that has not yet been installed and is lying on the ground

architecture gray stair railing uninstalled ground metal construction stairs parts prefabricated unattached handrail building material residential diy home improvement deck railings staircase renovation update old minimalist clean lines industrial style geometric steel loft apartment urban living texture weathered raw architectural hardware contemporary sleek design supplies project detail metalwork safety feature easy installation materials store inventory temporary regulations precut assembly required