A big part of your role as an engineer is to create great building environments where people can work and live and thrive. And that means a well-balanced heating and cooling system. If an HVAC system can't be easily balanced or rebalanced due to inaccessible balancing dampers, the end result will be a poor performing HVAC system, unhappy occupants, and a building owner who is not thanking you. There is a better way to design a HVAC system. There is a solution for this problem that you need to insist on. And that cure is right within your reach...that solution is Young Regulator.