Yeah these buildings don’t have bulkheads or risers for plumbing every office. And the entire central air system has to be reworked. If it’s a concrete and stee

Yeah these buildings don’t have bulkheads or risers for plumbing every office. And the entire central air system has to be reworked. If it’s a concrete and steel building this is going to be a monumental undertaking to cut each floor up and run metal for every one of these changes.