Ключевые слова: airshaft, beam, building, ceiling, conditioner, conditioning, construction, cool, cooling, duct, engineering, equipment, framework, heat, home, home ventilation, hvac, industrial, industry, infrastructure, inside, installation, installing, insulation material, interior, new, pipe, pipeline, reconstruction, residence, residential, roof, system, timber, unfinished, vent, ventilate, ventilation, ventilation ceiling, ventilation pipes, wood, wooden,