37 A commercial building, a Secure Riser Shaft provides all building tenants with separate, redundant and secure riser shafts for power, fuel oil, glycol and data feeds with access 24 hours a day, 7 days per week
42 A commercial building, a Secure Riser Shaft provides all building tenants with separate, redundant and secure riser shafts for power, fuel oil, glycol and data feeds with access 24 hours a day, 7 days per week