This product supplies breath for factories, warehouses, sport halls etc. . Important Functions Temperature: The Over temperature is 25C room air temperature and under temperature is 10°C. Flexible Drum: UBD has an flexible drum and guide vanes and infinitely variable throw length. Unit Sizes ,: It is available in 3 unit sizes of 300x150, 450x150 and 600x15 functions. Make: The UBD is made of anodised aluminium natural.