A smoke damper is a device used in HVAC systems to prevent the spread of smoke in the event of a fire. It is typically installed in the ductwork of a building and is designed to open and close in response to changes in air pressure, temperature, or smoke concentration. Smoke dampers are an important component of a building’s fire safety system, as they help to contain the spread of smoke and heat, allowing occupants to evacuate safely. Smoke dampers are usually made of metal and are tested to ensure they are able to withstand high temperatures and remain operational during a fire. They are also equipped with sensors that detect smoke and automatically close the damper when smoke is detected. Smoke dampers are a critical component of a building’s fire safety system and are required by most building codes.