1.Metal compact casing with high fire resistance, easy for installation, cleannessand maintenance.2.This type of air curtains has the piano-key control and remote control, with high-lowspeed adjustment, applicable or requirement at different places.3.The structure of centrifugal vane and vane wheel and the design of effective wormcase achieve optimal performance of the fan. This vane wheel is of high efficiency,low noise, high wind volume, high pressure and long range witch will formideal air curtains.4.Computer-based optimized design of motor is of reliable performance with continuousoperation of over 5000 hours without failure.5.Multiple installation specifications with 900, 1200 and 1500 mm case dimensionsavailable.6.Heights available for installation include 3m, 3.5m, 4m and 4.5m.