Industrial ventilation system on roof of skyscraper or high buildings. Fan turns in protective casing. Heating, ventilation and air
Mechanical ventilation equipment in hospital
Fan turns in protective casing on roof of skyscraper or high buildings. Heating, ventilation and air conditioning (HVAC). Industrial ventilation system
Industrial fan behind metal grille. Industry ventilation. Air cooling at food industry. Power industrial conditioning closeup. Fan blow cool air. Industrial air conditioner system. Industrial equipment
The movement of medical device for artificial lung ventilation. Artificial respiration or mechanical ventilation in intensive care or
Aerial view of cooling fan spinning on the roof of the skyscraper. Ventilation installation on the roof of a skyscraper
Aerial view of cooling fan spinning on the roof of the skyscraper. Ventilation installation on the roof of a skyscraper
NEW
Ceiling fan rotating in venue or hangar. Air ventilation and cooling of interior. Wide shot
4K Factory Ventilation roof fan
4K Factory Ventilation roof fan
NEW
Ceiling fan rotating in venue or hangar and air Circulation. electric ceiling fan for air ventilation and cooling in interior
Working Computer Black Cooler. Computer fan operation. Stopped, slowly accelerates, turns at full capacity, slow slows to a stop