Uvonair UV-80H Create Ozone by Ultra Violet Ozone safely alters the molecular structure of offensive micro-organisms, to eliminate odours instantly. Uvonair is an economical system that produces ozone using special ultra violet light bulbs. Ideal for rooms up to 5000-10000 cu.ft. (150-300m3). Fits 8″ (20 cm) ducts but can be installed into other size ducts using reducers. For larger areas use a Uvonair CD model.