AIR JAZZ AHU SCENT DIFFUSER SYSTEM AQSA - 7217 Soothing & Uniform Fragrances Through AHU Air Vents. Four Time Mode & Adjustable Fragarnce Instensity. Large Area Luxurious Fragrancing System. Eco Friendly & Ergonomic Design. Easy Refilling & Silent Working. Elite Customized Fragrances.