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Ventilation system. Air conditioner duct cover or Slim Duct or Duct liner installed on brick wall to protect refrigerant lines and keep installation neat and tidy. Air conditioning refrigerant pipe.
Two urban ventilation shafts with metal grills and graffiti, part of city infrastructure and industrial architecture.
Steel pipes for ventilation system. Ventilation ducts components Construction equipment.
Steel ventilation pipes. Shafts for purified air circulation. Ventilation system pipes under ceiling. Engineering communications in industrial hangar. Ventilation shafts under roof building. 3d image
Modern air ventilation system with ducts and ceiling diffusers in commercial building, showing HVAC installation for climate control. — Ventilation. HVAC. Building systems.

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