air air condition airation clima cool hot support vending vending machine vent ventilation ventilation system box cold condition conditioner cooler cooling cutout fan isolated machine system tool vent.ventilation warm above angle angles appearance building corrugated corrugations exhaust pipes grooved grooves height high metal perspectives protection roof roofing rooftop safety security shadows shapes shopping centre shops sunlight ventilation exhaust pipes capping cover covered covering edge exhaust-pipes exterior external roof-area roof-capping roof-whirlybird sky sunshine textures tiles tiling turbine-ventilator ventilation-exhaust-pipes ventilation-system ventilator vents whirlybird whirlybirds wind-turbine architectural attached attachments colored colors coloured colours dark edges edging elements light lines protective ridges rows surface surfaces black chimney chimneys solar solar-hot-water-system tank water-tank