LI211 Smoke Extraction Fan is used to remove stale air or pollutants in kitchens, bathrooms, workplaces, etc. Smoke and fire gases spread throughout a whole building during a fire. By removing the heat and smoke from the building, smoke extract fans secure it. This is very effective and safe to use. LI211 Smoke Extraction Fan is used to make it easier for residents to leave, stop the spread of the fire, and give firemen entry to the building.