Final answer:
The tenant's common duct is a shared space for tenants that includes ductwork for ventilation, heating, and cooling systems, as well as electrical wiring and plumbing.
Step-by-step explanation:
The tenant's common duct is a shared space for tenants. It refers to a duct system that is used by multiple tenants in a building. This can include ductwork for ventilation, heating, and cooling systems, as well as electrical wiring and plumbing. The purpose of a tenant's common duct is to provide a central infrastructure for utilities and services that can be shared among multiple tenants in an efficient and cost-effective manner.