Ключевые слова: above, aeration, air, cassette, ceiling, central, change, circulation, climate, concept, condition, conditioner, control, cover, duct, ducting, electric, electronic, energy, engineering, equipment, extractor, fan, fan cover, frame, grate, grid, grill, grille, high, indoor, infrastructure, lattice, lid, maintenance, modern, new, open, plastic, protection, service, striped, system, temperature, type, vent, ventilating, ventilation, ventilator,